| Name | Length
(km) | Type | Route | Notes |
|---|
| Adler Tunnel | 5.302 | rail | Swiss Federal Railways Hauenstein line | Opened 4 December 2000[1][2][3] |
| Aescher Tunnel | 2.176 | road | A4 motorway | [4] |
| Albula Tunnel | 5.865 | rail | Rhaetian Railway Albula line | |
| Arrissoules Tunnel | 2.987 | road | A1 motorway | |
| Baregg Tunnel | 1.390 | road | A1 motorway | |
| Belchen Tunnel | 3.180 | road | A2 motorway | |
| Bözberg Rail Tunnel | 2.526 | rail | Swiss Federal Railways Bözberg railway line | |
| Bözberg Road Tunnel | 3.705 | road | A3 motorway | |
| Bubenholz Tunnel | 0.550 | road | A51 motorway | |
| Bure Tunnel | 3.059 | road | A16 motorway | [5] |
| Cassanawald Tunnel | 1.230 | road | A13 motorway | |
| Ceneri Base Tunnel | 15.4 | rail | Swiss Federal Railways Gotthard line | Opened on 4 September 2020 |
| Crapteig Tunnel | 2.171 | road | A13 motorway | [6] |
| Cholfirst Tunnel | 1.260 | road | A4 motorway | |
| Felskinn–Mittelallalin Tunnel | 1.749 | rail | Metro Alpin | Funicular railway, entirely in tunnel |
| Furka Base Tunnel | 15.407 | rail | Matterhorn Gotthard Bahn Furka–Oberalp line | With car transport |
| Furka Summit Tunnel | 1.858 | rail | Furka Cogwheel Steam Railway | Superseded by the Furka Base Tunnel, now used by a heritage railway |
| Giswil Tunnel | 2.066 | road | A8 motorway | |
| Girsberg Tunnel | 1.770 | road | A7 motorway | |
| Glion Tunnel | 1.350 | road | A9 motorway | |
| Gotthard Base Tunnel | 57.104 | rail | Swiss Federal Railways Gotthard line | Opened on 1 June 2016 |
| Gotthard Rail Tunnel | 15.003 | rail | Swiss Federal Railways Gotthard line | |
| Gotthard Road Tunnel | 16.942 | road | A2 motorway | |
| Grauholz Tunnel | 6.295 | rail | Swiss Federal Railways Olten–Lausanne line | [7][8] |
| Great St Bernard Tunnel | 5.798 | road | | |
| Grenchenberg Tunnel | 8.578 | rail | BLS AG Grenchenberg line | [9][10] |
| Gubrist Tunnel | 3.273 | road | A1 motorway | |
| Hauenstein Base Tunnel | 8.134 | rail | Swiss Federal Railways Hauenstein line | |
| Hauenstein Summit Tunnel | 2.495 | rail | Swiss Federal Railways Hauenstein line | |
| Heitersberg Tunnel | 4.929 | rail | Swiss Federal Railways Heitersberg line | |
| Hirschengraben Tunnel | 2.148 | rail | Swiss Federal Railways Lake Zürich right-bank line | |
| Jungfrau Tunnel | 7.122 | rail | Jungfrau Railway | Rack railway, mostly in tunnel |
| Käferberg Tunnel | 2.119 | rail | Swiss Federal Railways Zürich–Winterthur line | |
| Kerenzerberg Rail Tunnel | 3.955 | rail | Swiss Federal Railways Ziegelbrücke–Sargans line | |
| Kerenzerberg Road Tunnel | 5.760 | road | A3 motorway | |
| Large Hadron Collider | 27 | sui generis | CERN near Geneva | Contains the world's largest and most powerful particle collider.
It is a circular loop under the territories of both Switzerland and France. |
| Letten Tunnel | 2.093 | rail | Swiss Federal Railways Lake Zürich right-bank line | Superseded by Hirschengraben Tunnel, now disused |
| Lötschberg Base Tunnel | 34.57 | rail | BLS AG Lötschberg line | Opened on 14 June 2007 |
| Lötschberg Tunnel | 14.612 | rail | BLS AG Lötschberg line | |
| Lopper I Rail Tunnel | 1.186 | rail | Zentralbahn Brünig line | |
| Lopper II Rail Tunnel | 1.743 | rail | Zentralbahn Luzern–Stans–Engelberg line | |
| Lopper Road Tunnel | 1.590 | road | A8 motorway | |
| Mappo–Morettina Tunnel | 5.518 | road | A13 motorway | [11] |
| Maroggia Tunnel | 0.569 | rail | Swiss Federal Railways Gotthard line | |
| Milchbuck Tunnel | 1.910 | road | A1L motorway | |
| Mont d'Or Tunnel | 6.099 | rail | Réseau Ferré de France Dijon–Vallorbe-Lausanne SBB TGV line | between Switzerland and France[12][13] |
| Monte Ceneri Rail Tunnel | 1.692 | rail | Swiss Federal Railways Gotthard line | Twin single-track tunnels:
Monte Ceneri I is 1675m in length; Monte Ceneri II is 1692m in length. |
| Monte Ceneri Road Tunnel | 1.412 | road | A2 motorway | |
| Munt la Schera Tunnel | 3.394 | road | | |
| Ricken Tunnel | 8.603 | rail | Swiss Federal Railways Uznach–Wattwil line | |
| Rosenberg Tunnel | 1.466 | rail | Swiss Federal Railways Winterthur–Rorschach line | [14] |
| Rosenberg Tunnel | 1.450 | road | A1 Motorway | [15] |
| Sachseln Tunnel | 5.213 | road | A8 Motorway | |
| San Bernardino Tunnel | 6.596 | road | A13 motorway | |
| San Nicolao Tunnel | 0.680 | road | A2 motorway | |
| Schöneich Tunnel | 0.6 | road | A1L Motorway | |
| Seelisberg Tunnel | 9.292 | road | A2 Motorway | |
| Sierre Tunnel | 2.460 | road | A9 Motorway | |
| Simplon Tunnel | 19.824 | rail | Swiss Federal Railways Simplon line | Between Switzerland and Italy |
| Sonnenberg Tunnel | 1.550 | road | A2 Motorway | |
| Vereina Tunnel | 19.058 | rail | Rhaetian Railway Vereina line | With car transport |
| Wasserfluh Tunnel | 3.556 | rail | Südostbahn Bodensee–Toggenburg line | [16] |
| Weinberg Tunnel | 4.8 | rail | Swiss Federal Railways Altstetten–Zürich–Oerlikon cross-city line | |
| Wipkingen Tunnel | 1.2 | rail | Swiss Federal Railways Zürich–Winterthur line | Extended from 0.959 km in the 1990s |
| Zermatt–Sunnegga Tunnel | 1.545 | rail | SunneggaExpress | Funicular railway, entirely in tunnel |
| Zimmerberg Base Tunnel | 9.4 | rail | Swiss Federal Railways Gotthard line | |
| Zimmerberg Tunnel |
1.984 |
rail |
Swiss Federal Railways Thalwil–Arth-Goldau line |
Single-track, built 1897 |
| Zürichberg Tunnel | 5 | rail | Swiss Federal Railways Zürichberg line | |
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