| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Matteo Marrocchi | 1 | |
| Mattéo Soulé | 1 | |
| Matt Goode | 1 | |
| Mattias Braach-Maksvytis | 1 | |
| Matt Ward | 1 | |
| Maximilliano Piazza | 1 | |
| Max Raeuber | 1 | |
| Max Rose | 1 | |
| Max Smerek | 1 | |
| Mel Janse van Rensburg | 1 | |
| Mhairi Thorburn | 1 | |
| Michaela Izakovičová | 1 | |
| Michael Bleazard | 1 | |
| Michael Garton | 1 | |
| Michael Leweson | 1 | |
| Michael Taran | 1 | |
| Michał Korban | 1 | |
| Michal Mikušínec | 1 | |
| Michel-Gabriel Paccard | 1 | 1757–1827. Paccard was resident in the chamonix area, then part of the Kingdom of Sardinia. |
| Michelle Greenall | 1 |