| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Martin Švec | 1 | |
| Mary Varale | 1 | References[1] With Emilio Comici, 1930s https://www.facebook.com/climbing.in.the.80s/photos/a.270388289694020/3481547141911436/ |
| Masoud Ghasemi | 1 | |
| Matej Sova | 1 | |
| Matisse Almira-Colcombet | 1 | |
| Matt Bosley | 1 | |
| Matt Corbishley | 1 | |
| Matt Cox | 1 | |
| Matt Desantis | 1 | |
| Matteo Marobin | 1 | |
| Mattéo Soulé | 1 | |
| Matthew Mendes | 1 | |
| Maximilliano Piazza | 1 | |
| Max Raeuber | 1 | |
| Max Smerek | 1 | |
| Megan Willmott | 1 | |
| Mei Kotake | 1 | |
| Mel Janse van Rensburg | 1 | |
| Mhairi Thorburn | 1 | |
| Michaela Izakovičová | 1 |