| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Jörg Lehne | 0 | Jörg was killed while bivouacing at the base of the Walker Spur when he was struck by rockfall. References[1] Mountain 6 (1969), page6 |
| Josh Horsley | 0 | |
| Josh Lowell | 0 | |
| Josh Muller | 0 | References[1] Interview with Sonnie Trotter, 2024 https://www.youtube.com/watch?v=UfUmNZHEpSg |
| Josie McKee | 0 | |
| J Sheppard | 0 | |
| Jules Cartwright | 0 | Jules Cartwright was a british climber and mountain guide. He died in 2004 while guiding a client on the Piz Badile. |
| Julian Anthoine | 0 | Mo reportedly requested that his ashes be flushed down the loo at the Alpine Club. [1] References[1] Wells, Colin. Who's who in British Climbing: Bite-sized Biographies of Dead Climbers - and Some that are Still Alive. United Kingdom: Climbing Company, 2008. |
| Julie-Ann Clyma | 0 | |
| Jummie Dunn | 0 | References[1] https://climbingzine.com/8-season-3-the-low-key-legend-a-conversation-with-jimmie-dunn/ [2] https://pueblostarjournal.org/sport/2023/08/04/legendary-climber-jimmie-dunn/ |
| Justen Sjong | 0 | |
| Justin Brown | 0 | |
| Justin Salas | 0 | References |
| Kai Harada | 0 | |
| Karel Hauschke | 0 | References[1] https://www.emontana-magazine.com/sandstone-climber-koksa-hauschke/ |
| Karel Nováček | 0 | |
| Karen Darke | 0 | |
| Karl Mehringer | 0 | |
| Kaya Lindasy | 0 | |
| Keith Lockwood | 0 | References |