The following index is provided as an overview of and topical guide to Wikipedia's articles on recreational dive sites. The level of coverage may vary:
- HMS A1 – The Royal Navy's first British-designed submarine
- HMS A3 – A-class submarine of the Royal Navy
- USS Aaron Ward – Gleaves-class destroyer of the United States Navy
- Abessinia – German ship wrecked at the Farne Islands in 1921. Now a dive site
- USS Accokeek – Auxiliary ocean tug of the United States Navy,
- Addo Elephant National Park Marine Protected Area – Marine conservation area in the Eastern Cape in South Africa
- HMAS Adelaide – Frigate of the Royal Australian Navy, lead ship of the class
- SS Admiral Sampson – American-flagged cargo and passenger steamship
- MV Adolphus Busch – Ship sunk off of Looe Key, Florida, as an artificial reef and dive site
- Aeolian Sky – Greek registered freighter sunk off Dorset after a collision
- USS Aeolus – Attack cargo ship converted into a cable repair ship
- Agat World War II Amtrac – Sunken amphibious tracked landing vehicle
- SS Ajax – Cargo steamship that was built in Germany in 1923
- Albert C. Field – Canadian cargo ship, sunk off the Needles during World War II
- Akumal – Community in Quintana Roo state, Mexico
- USS Algol – Andromeda-class attack cargo ship
- SS Algoma – Screw steamer sunk on Lake Superior
- Aliwal Shoal – A rocky reef off the coast of KwaZulu-Natal, South Africa
- Aliwal Shoal Marine Protected Area – Marine conservation area at Aliwal Shoal off the coast of KwaZulu-Natal, South Africa
- Alondra – English steamer wrecked off Ireland
- Al Munassir – Amphibious warfare vessel operated by the Royal Navy of Oman
- Alphard banks – Seamount on the Agulhas Bank
- Amaryllis – Canadian cargo ship
- Amed (Bali) – Group of fishing villages in Karangasem Regency on the north coast of Bali
- SS America – Steam packet wrecked off Isle Royale in Lake Superior
- USS Anderson – Sims-class destroyer
- Andrea Doria – Genoa registered passenger liner of the Italian line sunk after a collision off Massachusetts
- Anilao – Region popular for diving tourism – Marine protected sanctuary in Mabini, Batangas
- Antilla – Hamburg America Line cargo ship scuttled in 1940 off Aruba
- Antilles – French cruise ship that ran aground and sank off Mustique
- Apo Island – Volcanic island in Visayas, Philippines
- Apo Reef – Coral reef in the Philippines
- USS Apogon – Balao-class submarine
- SS Appomattox – Largest wooden steamship on the Great Lakes wrecked in 1905
- Aquila – British built cargo ship sunk off Ambon
- Aratama Maru – Japanese munitions transport ship sunk at Guam
- Arctic – Tugboat which worked in the Great Lakes
- USS Arkansas – Dreadnought battleship of the United States Navy
- SS Arratoon Apcar – 19th-century British steamship that is now a wreck in Florida
- Arrecifes de Cozumel National Park – Marine protected area in the Cozumel reef system off Mexico
- USS Arthur W. Radford – Spruance-class destroyer in the United States Navy
- USS Atlanta – Atlanta-class light cruiser
- Bangaram Atoll – Atoll in the Union Territory of Lakshadweep, India
- Bay of Pigs – Bay on the island of Cuba
- HMAS Bayonet – Attack-class patrol boat of the Royal Australian Navy
- Belize Barrier Reef – Series of coral reefs straddling the coast of Belize
- Bellubera – Ferry operated by the Port Jackson & Manly Steamship Company
- SS Ben Doran – Steam fishing trawler that operated out of Aberdeen
- SS Benwood – Steam cargo ship of the early twentieth century
- Bianca C. – Passenger ship sunk off Grenada
- USCGC Bibb – Secretary-Class Coast Guard ship
- SS Binnendijk – Dutch cargo steamship sunk by a mine off Portland Bill in the English Channel
- Biscayne National Park – American national park located south of Miami, Florida
- HMSAS Bloemfontein – Algerine-class minesweeper built for the Royal Navy in Canada during World War II
- Blue Grotto (Malta) – Sea caverns in Malta
- Blue Hole (Red Sea) – Submarine sinkhole north of Dahab, Egypt
- HMS Boadicea – B-class destroyer of the Royal Navy, sunk by enemy action in Lyme Bay
- Boesmansgat – Sinkhole and dive site in South Africa
- Bohol Sea – Marginal sea between the Visayas and Mindanao in the Philippines
- Booya – Schooner wrecked in Darwin, Australia
- BOS 400 – Recent wreck and dive site at Duiker Point on the Cape Peninsula west coast
- Bottle Island – One of the Summer Isles in Loch Broom, Scotland
- Bowie Seamount – Submarine volcano in the northeastern Pacific Ocean
- Breda – Dutch ship sunk off Scotland in 1940, now a recreational dive site.
- Brian Davis – Iris-class buoy tender
- HMAS Brisbane – Perth-class guided missile destroyer of the Royal Australian Navy sunk as a dive site off the Queensland coast
- HMHS Britannic – Olympic-class ocean liner
- Bud Bar – Artificial reef near Boynton Beach, Florida
- Bullhead Point Historical and Archeological District – Historic district in Wisconsin, United States
- Bulli Point – Diving location in Lake Taupō, New Zealand
- Bunaken – Island at the northern tip of Sulawesi in Indonesia
- Bunaken National Park – Marine park in the north of Sulawesi island, Indonesia
- Bungsberg – German cargo ship sunk near Tallinn, Estonia
- Byron – Schooner that sank in Lake Michigan
- Cliff Villa Peninsula – Promontory in Bandabou, Curaçao
- Cobb Seamount – Underwater volcano west of Grays Harbor, Washington, United States
- Cocklebiddy cave – Large flooded cave in Western Australia
- Cod Hole – Dive site in Queensland, Australia
- USCGC Comanche – Coast guard cutter
- SS Comet – 1857 steamship, only treasure ship of Lake Superior
- Constandis – Fishing vessel sunk as a recreational dive site in Limassol Bay, Cyprus
- HMAS Coogee – Passenger ferry that briefly served as a Royal Australian Navy armed patrol vessel
- SMS Cormoran – German armed merchant raider of WWI scuttled at Guam
- HMS Coronation – 90-gun second-rate ship of the line of the English Royal Navy
- Coron Bay – Bight in Palawan, Philippines
- Coron Island – Island in the Calamian Islands in Palawan in the Philippines
- Cozumel – Island in Quintana Roo, Mexico
- Crusader – Australian Army amphibious operations support ship of World War II
- USS Curb – Diver-class rescue and salvage ship
- PS Cumberland – Wooden-hulled side paddlewheeler wrecked in Lake Superior
- USCGC Cuyahoga – US Coast Guard Active-class patrol boat
- Hamilla Mitchell – Shipwreck and treasure recovery
- Hand Deeps – Area of the English Channel off the south coast of Cornwall
- Haql – City in Tabuk province, Saudi Arabia
- MT Haven – Crude oil carrier that sank off the coast of Genoa, Italy in 1991
- Heian Maru – Japanese ocean liner and auxiliary submarine tender.
- SS Henry Chisholm – Wooden freighter wrecked in isle royale
- MT Hephaestus – Bunkering oil tanker which ran aground off Qawra, Malta
- Heron Island (Queensland) – Coral cay in Queensland, Australia
- Hermann Künne – Type 1936-class destroyer
- HMS Hermes – 1924 unique aircraft carrier
- Herzogin Cecilie – German-built four-masted barque wrecked near Salcombe
- SS Hesrer – Bulk-freighter steamship that sank in Lake Superior
- Hillsea Point Rock – Group of pinnacles in the Rnglish Channel off Devon
- Hilma Hooker – Shipwreck in Bonaire in the Caribbean Netherlands
- Hispania – Swedish steamship wrecked in the Sound of Mull, now a dive site
- Hluleka Marine Protected Area – Marine conservation area in the Eastern Cape in South Africa
- HMAS Hobart – Former guided missile destroyer of the Royal Australian Navy scuttled off Yankalilla Bay in South Australia
- Hoi Ha Wan – Bay in a marine park in Hong Kong
- Hol Chan Marine Reserve – Marine reserve off the coast of Belize
- Home – Two-masted schooner which sank in Lake Michigan
- HMS Hood – Royal Sovereign-class battleship of the Royal Navy scuttled in Portland Harbour
- Hotel Terme Millepini – Hotel with 40m deep underwater diving pool
- Hranice Abyss – Flooded sinkhole near the town of Hranice, Czech Republic
- SS Hydra – American steel-hulled Great Lakes bulk freighter,
- HMS M2 – Royal Navy submarine monitor wrecked in Lyme Bay
- HMCS Mackenzie
- Madeira – Barge that sank in Lake Superior in 1905
- Magic Point – Coastal headland in Sydney, New South Wales, Australia
- Maine – British ship sunk in 1917 near Dartmouth, Devon. Now a recreational dive site
- Major General Wallace F. Randolph – Mine planter of The US Army
- Makna, Saudi Arabia – A town in Tabuk provence of Saudi Arabia
- Malgas Island Marine Protected Area – Marine conservation area on the west coast in the Western Cape province in South Africa
- Malapascua – Island in the Philippines
- Maloja – UK registered passenger steamship sunk by a mine off Dover
- Maltese patrol boat P29 – Ship scuttled as dive site off Malta
- Maltese patrol boat P31 – Minesweeper/patrol boat scuttled for use as a recreational dive site
- The Manacles – Set of treacherous rocks off The Lizard peninsula in Cornwall
- Mantanani Islands – Group of three islands off the north-west coast of Sabah, Malaysia
- HMS Maori – Royal Navy Tribal class destroyer sunk in Malta
- SS Manasoo – Canadian steamship launched in 1888
- SS Maori – Shoreline historical wreck in Leeugat Bay on the Cape Peninsula west coast
- Marguerite – French ship sunk in Lyme Bay in 1917. Now a dive site
- Maritime Heritage Trail – Battle of Saipan – A group of WWII wrecks in the lagoon at Saipan in the Northern Mariana Islands
- SMS Markgraf – German battleship scuttled in Scapa Flow
- SS Marquette – Wooden-hulled, American Great Lakes freighter
- Marsa Alam – Place in the Red Sea Governorate, Egypt
- Martin's Haven – Bay in Pembrokeshire, Wales, UK,
- SS Mauna Loa – Cargo steam-ship sunk in the bombing of Darwin
- Mayflower – Wooden hulled scow schooner that sank in Lake Superior
- USAT Meigs – United States Army transport ship sunk in Darwin Harbour
- Memba Bay – Bay in Nampula Province, Mozambique
- Mendi – Passenger steamship that sank after a collision south of the Isle of Wight
- MV Mercedes I – Merchant ship built in 1952 in Hamburg, Germany
- Merkanti Reef – Artificial reef at St. Julian's, Malta
- USCGC Mesquite – Seagoing buoy tender scuttled in Lake Superior
- Metamora – Wooden tug wrecked in the Georgian Bay area of Ontario
- Michigan Underwater Preserves – Protected areas of the Great Lakes on Michigan's coast
- SS Midland City – Canadian passenger and cargo vessel on the Great Lakes
- Mikhail Lermontov – Soviet cruise liner wrecked in the Marlborough Sounds, New Zealand
- SS Milwaukee – Great lakes train ferry that foundered in a storm
- USS Mindanao – US Navy Luzon-class internal combustion engine repair ship in service 1943-1947
- Minnedosa – Wooden Great Lakes schooner
- SS Miowera – Passenger and refrigerated cargo liner
- USS Mizpah – United States Navy patrol yacht
- Miztac – Schooner barge sunk in Lake Superior
- SS M.M. Drake – American steam barge that sank in Lake Superior
- USCGC Mohawk – US Coastguard cutter sunk as artificial reef off south-west Florida
- Mohegan – Steamer wrecked off the coast of the Lizard Peninsula, Cornwall
- Molasses Reef – Coral reef located within the Florida Keys National Marine Sanctuary
- RMS Moldavia – British ship sunk in 1918 off Beachy Head, now a dive site
- Molinere Underwater Sculpture Park – Collection of underwater contemporary art off Grenada in the Caribbean
- Molnár János Cave – Water-filled cave in Budapest, Hungary
- Molokini – Islet in Maui County, Hawaii
- SS Monarch – Passenger-package freighter that sank in Lake Superior
- USS Monitor – First ironclad of the US Navy, 1861–1862
- SS Monrovia – French cargo ship
- HMS Montagu – Pre-dreadnought battleship of the British Royal Navy wrecked on Lundy Island
- Mount Storm Lake – Cooling water reservoir in West Virginia, U.S.
- MV RMS Mulheim – German owned container ship wrecked at Land's End, United Kingdom
- USS Muliphen – Andromeda-class attack cargo ship
- SS Myron – Wooden steamship that sank in Lake Superior
- Oceana – Cargo and passenger ship sunk off Beachy Head after a collision
- Octopus Hole – A designated conservation area on the Washington's Hood Canal.
- Octopus Hole Conservation Area – A designated conservation area on the Washington's Hood Canal.
- Ogof Agen Allwedd – Cave in Llangattock, Powys, Wales
- Oite – Kamikaze-class destroyer built for the Imperial Japanese Navy during the 1920s
- SS Onoko – Iron hulled Great Lakes freighter.
- USS Oriskany – Essex class aircraft carrier sunk to create an artificial reef
- Osborne Reef – Artificial reef off Fort Lauderdale, Florida, US
- Oslofjord – Ocean liner sunk after hitting a mine off the River Tyne
- Osprey Reef – Submerged atoll in the Coral Sea, northeast of Queensland, Australia
- Ox Bel Ha – Flooded cave system in Quintana Roo, Mexico
- Ozone – Paddle steamer built in Scotland in 1886
- P29 – Ship scuttled as dive site off Malta
- P31 – Minesweeper/patrol boat scuttled for use as a recreational dive site
- Palancar Reef – Coral reef off Cozumel, Mexico in the Caribbean sea
- Palmwood shipwreck – 17th century shipwreck in the Netherlands
- SS Panay – Passenger vessel built for the Great Western Railway
- Panglao, Bohol – Municipality in Bohol, Philippines
- SS Papoose – Oil tanker built in 1921
- Pearl and Hermes Atoll – Atoll of Hawaii
- Pearse Resurgence – Source of the Pearse Stream on Mt. Arthur, New Zealand South Island
- Pedernales – Lake tanker damaged by a torpedo at Aruba, where part of the ship remains
- Pedra da Risca do Meio Marine State Park – A state park in the state of Ceará, Brazil
- HMS Pelorus (J291) – Algerine-class minesweeper built for the Royal Navy during World War II
- Persier – British ship sunk in Plymouth Sound in 1945. Now a dive site
- HMAS Perth – Guided missile destroyer of the Australian Navy, sunk as a dive site off Western Australia
- Pescador Island – Island in Basdiot barangay, Moalboal, Cebu, the Philippines
- Petit Saint Vincent – Island in St. Vincent and the Grenadines
- SS Pewabic – Package freighter that served ports on the Upper Great Lakes
- Picanninnie Ponds – Recreational dive site in South Australia
- Piccaninnie Ponds Conservation Park – Protected area near Mount Gambier in South Australia
- SAS Pietermaritzburg – Algerine-class minesweeper built for the Royal Navy during World War II
- USS Pilotfish – Balao-class submarine sunk at Bikini atoll
- Piłsudski – Polish passenger ship sunk off the Yorkshire coast
- SS Pioneer – Steam dredging ship
- Pluragrotta – Flooded cave in Norway
- USCGC Point Swift – United States Coast Guard cutter
- Pollatoomary – Flooded cave in Ireland
- Pondoland Marine Protected Area – Marine conservation area in the Eastern Cape province of South Africa
- Pool Fisher – British merchant vessel that sank off the Isle of Wight
- Poor Knights Islands – Group of islands and marine reserve off the east coast of new Zealand's North Island
- Pope's Eye – Uncompleted foundation for an island fort at Port Philip, Victoria, Australia
- Porteau Cove Provincial Park – Place in British Columbia, Canada
- Porth Dafarch – Bay in western Anglesey, Wales
- Port Hughes jetty – Coastal town in South Australia
- SS Port Kembla – A steamer owned by the Commonwealth and Dominion Line
- HMS Port Napier – Royal Navy minelayer destroyed in Loch Alsh, Scotland, by an explosion following an engine room fire
- Port Noarlunga jetty – Recreational dive site in South Australia
- Port Noarlunga Reef – Recreational dive site in South Australia
- Portsea Hole – A depression in the seafloor of Port Phillip near Portsea in Victoria, Australia
- President Coolidge – American ocean liner sunk by mines in the New Hebrides
- Preussen (ship) – German steel-hulled five-masted ship-rigged windjammer sunk in Crab Bay after a collision
- Preußen – German steel-hulled five-masted ship-rigged windjammer sunk in Crab Bay after a collision
- HMS Prince of Wales – 1941 King George V-class battleship of the Royal Navy
- Protea banks – Reef about 7 km off the south coast of KwaZulu-Natal, South Africa
- Protea Banks Marine Protected Area – Marine conservation area in the coastal waters of southern kwaZulu-Natal in South Africa
- Puerto Galera – Municipality in Oriental Mindoro, Philippines
- Punta Cana – Resort town in La Altagracia Province, Dominican Republic
- USS Puritan – Passenger ship that sank in Lake Superior
- Radaas – Ship sunk in 1917 near Portland Bill, now a dive site
- Rainbow Warrior – Greenpeace vessel bombed by French intelligence service operatives in Auckland harbour, refloated and scuttled as a dive site
- USS Rankin – US Navy Tolland-class attack cargo ship in service 1945-1947, 1952-1971
- Rapid Bay jetty – Recreational dive site in South Australia
- Safaga – Town on the Red Sea coast of Egypt
- Sagamore (barge) – Whaleback barge wrecked in Lake Superior
- HMS Safari – Royal Navy S-class submarine sunk in the English Channel while on tow to shipbreakers
- HMCS Saguenay – Destroyer of the Royal Canadian Navy
- USS Sailfish – Sargo-class submarine of the US Navy
- Sakawa – Agano-class light cruiser
- Salem Express – Car and passenger ferry wrecked off the Egyptian coast
- USS Salvia – Iris-class buoy tender
- SS Samuem Mather – U.S. merchant ship that sank in Lake Superior
- Samuel P. Ely – Schooner wrecked in Lake Superior
- San Andrés (island) – One of the two principal islands of San Andrés and Providencia, Colombia
- Sanko Harvest – Bulk carrier that sank off Esperance, Western Australia
- San Pedro Nolasco Island – Mexican island in the Gulf of California
- USS Saratoga – US Navy aircraft carrier sunk by nuclear weapon testing at Bikini atoll
- Sardinia Bay Marine Protected Area – Marine conservation area in the Eastern Cape in South Africa
- HMCS Saskatchewan – Mackenzie-class destroyer of the Royal Canadian Navy
- Sardine run – Annual fish migration off the shores of South Africa
- Scapa Flow – Body of water in the Orkney Islands, Scotland
- SS S.C. Baldwin – Wooden-hulled steam barge sunk in Lake Michigan
- USS Scrimmage – Admirable-class minesweeper built for the United States Navy
- USS Scuffle – Admirable class minesweeper sunk as an artificial reef off Cozumel
- HMS Scylla – Royal Navy frigate sunk as artificial reef off Whitsand Bay, Cornwall
- MS Seattle – German cargo ship sunk in 1940
- Second Valley – Coastal town in South Australia
- SS Selah Chamberlain – Great Lakes freighter that sank on Lake Michigan in 1886
- Seven Stones Reef – Rocky reef offshore of Land's End, Cornwall
- Shaʽb Abu Nuħas – Coral reef in the Red Sea
- Shadwan Island – Egyptian island in the Red Sea
- The Shaft (sinkhole) – Karst feature in South Australia
- Shark River Reef – Artificial reef off New Jersey
- Ship cemetery at Ekenabben – Place in Blekinge, Sweden
- List of shipwrecks of the United States
- HMS Sidon – Royal Navy submarine sunk in Portland Harbour by explosion of a faulty torpedo
- Silfra – Water-filled rift in Iceland between the North American and Eurasian tectonic plates
- Similan Islands – Marine protected area in Phang Nga Province, southern Thailand
- Sipadan – Oceanic island in Malaysia
- SS Sir William Seimens – American lake freighter (1896–1944)
- Slickstones Quarry, Cromhall – Quarry in Gloucestershire
- Socorro Island – Small volcanic island off the west coast of Mexico
- Sodwana Bay – A National Park with marine protected area on the northern KwaZulu-Natal coast of South Africa
- Soma Bay – Coastal resort in the Red Sea Governorate, Egypt
- Sound of Mull – Sound between the Inner Hebridean island of Mull and mainland Scotland
- South Channel Fort – Island in southern Port Phillip, Victoria, Australia
- USCGC Spar – Iris class sea going buoy tender
- USS Spiegel Grove – US Navy dock landing ship sunk off Key Largo as an artificial reef
- St Abbs – Village in Berwickshire, Scotland, UK
- St. Crispin's Reef – An elongate outer-shelf coral reef in the Great Barrier Reef, Queensland, Australia
- Stanegarth – Steam tugboat scuttled as a dive feature at Stoney Cove
- Stanwood – British ship sunk off Falmouth in 1939, now a recreational dive site
- Stella – Passenger ferry wrecked off the Casquets
- SS Stepas Darius – Liberty ship built in the United States during World War II
- Stilbaai Marine Protected Area – Marine conservation area in the Western Cape in South Africa
- HMS St Lawrence (1814) – First-rate wooden warship of the Royal Navy that served on Lake Ontario
- Stoney Cove – Flooded quarry in Leicestershire used for scuba diving
- Subic Bay – Bay on the west coast of the island of Luzon, Philippines
- Sund Rock – A designated conservation area on the U.S. state of Washington's Hood Canal
- SS Superior City – Freighter in the Great Lakes service that sank in Lake Superior
- HMS Swallow (1824) – Brig-sloop shippwreck in South Australia
- HMAS Swan – Australian "River" class destroyer sunk as a dive site off the coast of Dunsborough, Western Australia
- Swanage Pier – Pier in Swanage, Dorset, United Kingdom
- Sweepstakes (schooner) – Canadian Great Lakes ship sunk in 1885
- Taba, Egypt – City in the gulf of Aqaba in South Sinai, Egypt
- Table Mountain National Park Marine Protected Area – Marine conservation area around the Cape Peninsula in South Africa
- Taganga – Fishing village and corregimiento in Magdalena, Colombia
- SS Tahoe – Steamship scuttled in Lake Tahoe
- USCGC Tamaroa – Coast guard cutter
- USS Tarpon – US Navy Submarine which foundered south of Cape Hatteras, North Carolina, while under tow to the scrap yard.
- Texas Clipper – Merchant marine training vessel with the Texas Maritime Academy
- HMS Thames (1885) – Mersey class cruiser
- Thesis – Steamship wrecked in 1889 in the Sound of Mull, Scotland. Now a recreational dive site.
- Thistlegorm – British armed merchantman sunk in the Red Sea at Ras Muhammad
- Thomas Friant – Wooden-hulled ferry (later fish tug)
- Thomas Wilson – Whaleback freighter that sank in Lake Superior
- Thunder Bay National Marine Sanctuary – Aquatic protected area in Michigan, USA
- Thunderbolt Wreck – Mine planter of The US Army
- Toa Maru – Japanese transport ship sunk by a submarine off Gizo, Solomon Islands
- HMAS Tobruk (L 50) – Modified Round Table-class Landing Ship Heavy of the Royal Australian Navy
- Tokai Maru – Japanese passenger-cargo ship sunk in Apra Harbor, Guam
- Torrey Canyon – Suezmax Class oil tanker wrecked off the western coast of Cornwall
- SAS Transvaal – Loch-class frigate in the South African Navy
- MV Treasure – June 2000 environmental disaster off the coast of South Africa
- Tsitsikamma Marine Protected Area – Marine conservation area on the south coast of South Africa
- Tubbataha Reef – Protected area in the middle of the Sulu Sea
- HMNZS Tui – Conrad class oceanographic ship
- Tulagi – Small island in Solomon Islands, north of Guadalcanal
- Tulamben – Village in Karangasem, Bali Province, Indonesia
- Tung Ping Chau – Island in Hong Kong
- U-40 – German submarine sunk by a mine in the English Channel
- U-352 – German submarine sunk by depth charges south of Morehead City, North Carolina
- U-1195 – German submarine sunk by antisubmarine mortar to the southeast of the Isle of Wight
- Um El Faroud – Libyan owned tanker scuttled as dive site off Malta
- Utila – Smallest of Islas de la Bahía, Honduras
- Varvassi – Greek freighter wrecked at The Needles in a storm after engine failure
- USS Vermilion – Tolland-class attack cargo ship
- SS Vernon – American passenger and package freighter ship sunk in Lake Michigan
- Ve Skerries – Small islands in the west of Shetland
- SS Vienna – Steamship sunk after a collision in Lake Superior
- Vortex Spring – Freshwater spring and recreational dive site in Florida
- HMNZS Waikato – Leander class frigate of the Royal New Zealand Navy
- Wakatobi Regency – Group of islands in Southeast Sulawesi, Indonesia
- Wakulla Springs – Spring and cave in the Floridan Aquifer under the Woodville Karst Plain of north Florida
- Walker Bay Whale Sanctuary – Marine conservation area in the Western Cape province in South Africa
- Walter L M Russ – German freighter wrecked in St George's Channel
- Wardang Island – Island in the Spencer Gulf, South Australia
- Washingtonian (1913) – American freighter that sank off Delaware after a collision
- Wast Water – Body of water in Cumbria, England
- TSS Waterford – Passenger vessel built for the Great Western Railway
- Wazee Lake – Artificial lake of Wisconsin, US
- Weh Island – Island in Aceh, Indonesia
- HMNZS Wellington – Leander class frigate sunk as artificial reef off Wellington, New Zealand
- USS Westchester County – US Navy tank landing ship built in 1952
- Western Rocks, Isles of Scilly – Group of rocks in the Isles of Scilly, England, United Kingdom
- SS Wexford – Freighter shipwreck and dive site in lake Huron
- Whitefish Point Underwater Preserve – Reserve to protect and conserve shipwrecks and historical resources in Lake Superior
- Whittle Rock – Granite reef in False Bay, South Africa
- Whittle Rock reef – Granite offshore reef area in False Bay, South Africa
- Whyalla – City in South Australia
- USS Wilkes-Barre – Cleveland-class light cruiser
- SS William B. Davock – Lake freighter sunk in Lake Michigan
- SS William C. Moreland – Great Lakes freighter wrecked in Lake Superior
- Wolf Rock – Marine pinnacles in Queensland, Australia
- Wondergat – Sinkhole dive site near Lichtenburg, South Africa
- Wreck Alley, San Diego – Recreational dive area with several wrecks sunk as artificial reefs
- USS Yancey – Andromeda-class attack cargo ship sunk as an artificial reef off North Carolina
- YO-257 – US Navy yard oiler scuttled off Waikiki, Honolulu, Hawaii
- Yongala – Australian registered passenger ship that sank off Cape Bowling Green, Queensland, Australia
- HMCS Yukon – Mackenzie-class destroyer of the Royal Canadian Navy
- Zacatón – Water-filled sinkhole in Mexico
- Zenobia – RO-RO ferry that capsized and sank near Larnaca, Cyprus
- Zealandia – Australian cargo and passenger steamship sunk in the bombing of Darwin
- Zingara – Cargo vessel wrecked in the Straits of Tiran in the Red Sea