| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Mattias Braach-Maksvytis | 2 | |
| Mattias Flodin | 2 | |
| Mauro Schwaszta | 2 | |
| Max Jones | 2 |
Tahoe-based climber and later elite mountain biker. Partnered Mark Hudon on a number of early free or nearly free "as free as can be" ascents of big walls in the late 1970s-early 1980s. |
| Maya Patel | 2 | |
| Megan Willmott | 2 | |
| Mia Støver Wollebæk | 2 | |
| Michael Bate | 2 | |
| Michael Tonon | 2 | |
| Michal Mikušínec | 2 | |
| Miho Nonaka | 2 |
References |
| Mike Kosterlitz | 2 |
Valle dell'Orco trad pioneer and Nobel Prize winner. References |
| Mike Law | 2 | |
| Mike Mullins | 2 | |
| Mike Thomas | 2 | |
| Milan Sykora | 2 | |
| Molly Hymes | 2 | |
| Molly Shep | 2 | |
| Morgan Preece | 2 | |
| Moritz Winkler | 2 |