| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Laurence Guyon | 0 | |
| Lauren DeLaunay Miller | 0 | |
| Laurent Belluard | 0 | |
| Laurie Holliwell | 0 | |
| lee | 0 | |
| Lee Cujes | 0 | |
| Lee Hansche | 0 | References |
| Leonard Birkett | 0 | |
| Lewis Perrin-williams | 0 | |
| Lise Billon | 0 | |
| Lito Tejada-Flores | 0 | |
| Lorenzo Puri | 0 | |
| Louis Prestat | 0 | |
| Lou Whittaker | 0 | References[1] https://gripped.com/profiles/american-climber-and-guide-lou-whittaker-dies-at-95/ |
| Lucho Rivera | 0 | |
| Lucien Beradini | 0 | |
| Lucy Pearson | 0 | |
| Luke Mehall | 0 | Founder of The Climbing Zine. |
| Madaline Sorkin | 0 | |
| Maksym Petrenko | 0 | References[2] https://www.digitalrock.de/egroupware/ranking/sitemgr/digitalrock/pstambl.html#person=609&cat=1 |