| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Karoline Sinnhuber | 6 | |
| Katherine Choong | 6 | |
| Kazuma Ise | 6 | |
| Kevin Thaw | 6 | References[1] https://www.ukclimbing.com/articles/features/kevin_thaw-4327 |
| Kilian Fischhuber | 6 | Killian Fishhuber is an Austrian climber known for his success in bouldering world cups. He won the world cup five times, including in three consecutive years: 2005, 2007, 2008, 2009 and 2011. |
| Kokoro Fujii | 6 | |
| Leah Crane | 6 | References[1] Interview with Adrian Berry April 2003 https://web.archive.org/web/20061022044639/http://www.planetfear.com/article_detail.asp?a_id=68 |
| Loïc Derby | 6 | References[1] https://www.8a.nu/news/loic-debry-sends-four-8c-%2B-in-3-months-0finq |
| Luca Martins | 6 | |
| Lucia Dörffel | 6 | |
| Lucinda Whittaker | 6 | |
| Lucy Ross | 6 | |
| Margo Hayes | 6 | |
| Maria Davies Sandbu | 6 | |
| Matt Birch | 6 | |
| Miles Gibson | 6 | |
| Miles Perry | 6 | |
| Milo Timberlake | 6 | |
| Natalia Grossman | 6 | |
| Natalie Berry | 6 | The first Scottish woman to climb 8b with her ascent of Satan X in 2012. |