25 players
| Name | Demos | Length |
|---|---|---|
| OgreSlayeR | 24 | 21:17 |
| Ohris | 3 | 11:11 |
| okdoomer | 7 | 8:02:40 |
| Okuplok | 21 | 6:46:27 |
| OldManDan | 10 | 12:34 |
| Ole Hartvigsen | 31 | 2:36:16 |
| Olio | 35 | 1:15:15 |
| Olivier Guyetant | 2 | 1:06 |
| omalefico32x | 3 | 1:05 |
| omnibot | 1 | 12:28 |
| Ondrej Vosatka | 14 | 44:21 |
| OnyxStar | 1 | 1:16:27 |
| ooMOOMANoo | 2 | 0:18 |
| Opulent | 1336 | 120:28:29 |
| Oree | 5 | 0:52 |
| Orii | 1020 | 46:53:08 |
| osminee | 17 | 45:34 |
| Otis Erdna | 53 | 11:05:54 |
| Outrageous Videos | 16 | 21:14 |
| Overmind | 23 | 3:07:26 |
| Oxyde | 9 | 2:14:19 |
| Oyvind Stenhaug | 61 | 2:58:15 |
| P3Prod1 | 3 | 3:32 |
| pa1ny | 7 | 51:18 |
| Pablo (Diabolución) | 1 | 12:57 |