Class 1

Class 1 may refer to:

• Class I railroad, a term used in North American railroad size classification
• Class 1 Touring Cars, an FIA classification for cars in motor racing
• Class 1 World Powerboat Championship
• Classes of United States senators
• SCORE Class 1, unlimited off-road racing buggies
• The first class in terms of hiking difficulty in the Yosemite Decimal System
• A contribution class in the National Insurance system in the UK
• An IEC protection class in the electrical appliance manufacturing industry
• A class in laser safety
• HAZMAT Class 1 Explosives

See also

• Class I (disambiguation)
• Class 01 (disambiguation)
• First class (disambiguation)
• NSB El 1, an electric locomotive of Norway
• NSB Di 1, a diesel locomotive of Norway
• Type 1 (disambiguation)