vallées
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Maurienne | Relief | 23 | 72.4 |
| Matheysine | Relief | 2 | 13.9 |
| Markarfljótsgljúfur | Relief | 3 | 0.3 |
| Marble Canyon | Relief | 8 | 1.1 |
| Malham Cove | Relief | 8 | 2.5 |
| Makhtesh Ramon | Relief | 26 | 6.7 |
| Lötschental | Relief | 18 | 7.9 |
| Léventine | Relief | 10 | 2.0 |
| Lower Lea Valley | Relief | 3 | 0.7 |
| Logarska Dolina | Relief | 14 | 0.8 |
| Loch Ard Gorge | Relief | 6 | 1.8 |
| Liddesdale | Relief | 5 | 0.7 |
| Lesachtal (vallée) | Lieu | 4 | 0.0 |
| Les Californies | Relief | 19 | 3.0 |
| Leimental | Relief | 4 | 0.6 |
| Left Hand Canyon | Relief | 3 | 0.0 |
| Lee Vining Canyon | Relief | 3 | 0.0 |
| Lebong | Relief | 2 | 0.5 |
| Le Grand Goulet | Relief | 1 | 0.3 |
| Le Boël | Relief | 2 | 5.2 |
| Le Bout du Monde | Relief | 2 | 8.7 |
| Laurel Canyon | Relief | 12 | 9.3 |
| Last Chance Canyon | Relief | 3 | 0.0 |
| Lapporten | Relief | 15 | 0.4 |
| Langkloof | Relief | 6 | 0.0 |
| Laliderer Tal | Relief | 3 | 0.0 |
| Lakhdar (rivière) | Rivière | 5 | 0.3 |
| Lagan Valley | Relief | 3 | 0.2 |
| Lac de Lei | Relief | 18 | 1.3 |
| La Savanne | Relief | 1 | 0.0 |
| La Chapelle | Relief | 2 | 2.1 |
| L'entonnoir | Relief | 1 | 0.5 |
| Kumrat | Relief | 8 | 0.1 |
| Klostertal | Relief | 12 | 0.5 |
| Kleinwalsertal | Relief | 19 | 3.2 |
| Kirkdale | Relief | 3 | 0.2 |
| Kings Canyon | Relief | 12 | 5.0 |
| Kings Canyon | Relief | 3 | 0.0 |
| Kiental | Relief | 6 | 1.3 |
| Khumbu | Relief | 35 | 7.0 |
| Kawuneeche Valley | Relief | 5 | 0.1 |
| Kasei Valles | Relief | 16 | 0.8 |
| Karwendeltal | Relief | 3 | 0.1 |
| Karangahake | Relief | 6 | 0.0 |
| Kaouar | Relief | 13 | 3.0 |
| Kankakei | Relief | 4 | 0.2 |
| Kandertal | Relief | 7 | 0.4 |
| Kamniška Bistrica | Relief | 3 | 0.3 |
| Kamikōchi | Relief | 19 | 3.2 |
| Kaldidalur | Relief | 10 | 0.2 |