| Name | Steam ID | Records | WRs |
|---|---|---|---|
| Irfutin | 76561197991076870 | 1 | 0 |
| iridescent. | 76561198039453816 | 7 | 0 |
| Irigatzu | 76561198074744491 | 2 | 0 |
| _irisH- | 76561197976061333 | 1 | 0 |
| Irish_ | 76561198054520358 | 1 | 0 |
| Irishmadafaka | 76561198807258917 | 1 | 0 |
| Iroh | 76561198063548321 | 2 | 0 |
| i-rom | 76561198001053765 | 1 | 0 |
| iroN | 76561198140887913 | 4 | 0 |
| Iron | 76561198807939225 | 9 | 0 |
| Iron | 76561198100181435 | 1 | 0 |
| Iron Beagle | 76561198068651092 | 1 | 0 |
| Ironman Dingo | 76561198095779234 | 23 | 0 |
| iRook°͜° | 76561198042025390 | 179 | 0 |
| Iroslav | 76561197978253638 | 1 | 0 |
| irotibo | 76561198044703791 | 1 | 0 |
| IRQ3 | 76561198391623910 | 7 | 0 |
| IrrationalExuberance | 76561198046643624 | 5 | 0 |
| [☾★ ]IrResistible{♥‿♥} | 76561198170841733 | 1 | 0 |
| Iruk | 76561198044573327 | 1 | 0 |
| i r winner | 76561198098413665 | 1 | 0 |
| IsaacElite10 | 76561198030652150 | 1 | 0 |
| IsaacNewton | 76561198202341684 | 1 | 0 |
| isaBadMutha | 76561197968985825 | 3 | 0 |
| Isads | 76561198125622555 | 1 | 0 |
| IsAKoV | 76561198286211083 | 1 | 0 |
| i|SaLeX | 76561197996518457 | 5 | 0 |
| isalingebruik | 76561198032630476 | 1 | 0 |
| iSalooly | 76561198142198535 | 3 | 0 |
| ís a mental | 76561198017349469 | 1 | 0 |
| ISC kristoff90 | 76561198035382647 | 11 | 0 |
| Isdalek | 76561198075743595 | 1 | 0 |
| isevendeuce | 76561199094740851 | 1 | 0 |
| ish | 76561198064761224 | 7 | 0 |
| i s h i | 76561198090519649 | 2 | 0 |
| I shoot head | 76561198883957628 | 1 | 0 |
| ISIS`Cube | 76561198001512214 | 1 | 0 |
| iskinfoiskinfo | 76561198054668801 | 1 | 0 |
| ISLAK ATES | 76561198308698047 | 1 | 0 |
| islandinthenet | 76561198354281013 | 1 | 0 |
| isn | 76561198176845923 | 1 | 0 |
| isN4N | 76561198049186180 | 2 | 0 |
| isola_71 | 76561198075941182 | 1 | 0 |
| Isolat3r | 76561197970790219 | 1 | 0 |
| iSolovev | 76561198259156083 | 1 | 0 |
| Isonoe | 76561198105218481 | 2 | 0 |
| israel_r™ | 76561198362872048 | 9 | 0 |
| Israfil | 76561198065318291 | 30 | 0 |
| Israiled | 76561197993303301 | 1 | 0 |
| issa8484 | 76561198082267374 | 1 | 0 |