| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Laurent Avare | 1 | |
| Laurent Jacob | 1 | |
| Laurie Reddel | 1 | |
| Lawrence Hughes | 1 | |
| Leigh Mcginley | 1 | |
| Leire Agirre | 1 | |
| Lena Marie Müller | 1 | |
| Léo Billon | 1 |
Alpinist, guide, member of the Group Militaire de Haute Montaigne. References |
| Leo Dickinson | 1 | |
| Leo Gheza | 1 | |
| Leo Kunkel | 1 | |
| Leo Moger | 1 | |
| Leonard Coyne | 1 | |
| Levente Pinter | 1 | |
| Liam Foster | 1 | |
| Libby Peter | 1 | |
| Lilian Bonniot | 1 | |
| Lily Fitzgibbon | 1 | |
| Lily Keal | 1 | |
| Lily Kettle | 1 |