| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Obsession | Sport route | 9b | 1 | ||
| Obsidan | Boulder problem | 8C+ | 1 | ||
| Occam's Razor | Boulder problem | 8B | 1 | ||
| Occam's Razor | Deep water solo | 7c+ | 1 |
FSA. Neil Gresham, Sep/2011 |
|
| Octopus | Boulder problem | 8B | 1 | ||
| Odins Bue | Boulder problem | 8A | 1 | ||
| Óð til Sigurs | Boulder problem | 8A+ | 1 | ||
| Offbeat | Trad climb | E8 | 1 | ||
| Offspring | Trad climb | E5 | 1 | ||
| Off the Ground | Boulder problem | 8B | 1 | ||
| Off the Mark | Trad climb | E7 | 1 | ||
| Öga för Öga | Boulder problem | 8C | 1 | ||
| Øgletryne | Sport route | 8a | 1 | ||
| Ogwen Crack | Trad climb | E7 | 1 | ||
| Oh Saint Léger Fait Moi Monter au Relais | Sport route | 8a+ | 1 | ||
| Oiran | Boulder problem | 8B+ | 1 | ||
| Oisiiyo | Sport route | 7c+ | 1 | ||
| Okachi | Sport route | 9a+ | 1 | ||
| Oksespranget | Boulder problem | 8A | 1 | ||
| Okuro | Boulder problem | 8C | 1 |