| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Linda Sjödin | 1 | |
| Linus Frank | 1 | |
| Linus Raatz | 1 | |
| Lionel Clerc | 1 | |
| Lionel Terray | 1 | |
| Lisa König | 1 | |
| Livia Jakob | 1 | |
| Livvy Gent | 1 | |
| L Joe Griffin | 1 |
Avon Gorge activist in the early 1950s and founder of the Bristol University Mountaineering Club. References[1] Crocker, M. (2017). Avon Gorge: Climbers’ Club |
| Logan Barber | 1 | |
| Lore Fornaro | 1 | |
| Lorenzo Bassi | 1 | |
| Louis Berlin | 1 | |
| Louis Gundolf | 1 | |
| Loup Guermonprez | 1 | |
| Lou Wilkinson | 1 | |
| Lovro Črep | 1 | |
| Luca Bertacco | 1 | |
| Lucas Parker | 1 | |
| Lucien Guillou | 1 |