The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 14401 | Offensive Behaviour | £ 509,861,247 | |
| 14402 | office | £ 627,486,031 | |
| 14403 | Official Location | £ 195,860,016 | |
| 14404 | OfflineTV | £ 56,600,622 | |
| 14405 | Offroad Trucker | £ 52,012,420 | |
| 14406 | Offshore | £ 367,643,133 | |
| 14407 | Offshore Accounts | £ 331,049,575 | |
| 14408 | Offshore Cash | £ 60,279,702 | |
| 14409 | og esaelP | £ 4,208,484 | |
| 14410 | ogkush | £ 2,491,394 | |
| 14411 | Ogrimmar | £ 35,379,515 | |
| 14412 | Oh Herro | £ 2,995,837 | |
| 14413 | Oh Jesus Christ | £ 9,142,153 | |
| 14414 | Oh No | £ 93,645,540 | |
| 14415 | Oh YEAH | £ 2,549,726 | |
| 14416 | ohara inc | £ -165,571 | |
| 14417 | ohe herrow | £ 5,703,509 | |
| 14418 | Ohnoitsmymothernlaw | £ 5,504,562 | |
| 14419 | Ohtaku inc | £ 3,600,029 | |
| 14420 | Ohtaku inc1 | £ 4,456,703 | |
| 14421 | Ohtaku inc2 | £ 1,267,353 | |
| 14422 | Ohtaku inc3 | £ 4,191,984 | |
| 14423 | Ohtaku inc4 | £ 4,118,968 | |
| 14424 | ohyesyesh | £ 50,000 | |
| 14425 | Oil | £ 833,968,470 | |
| 14426 | Oil CONGLOMO | £ 2,646,845 | |
| 14427 | Oil Field | £ 271,568 | |
| 14428 | Oil Inc | £ 1,610,027 | |
| 14429 | Oil Industry | £ 4,441,721 | |
| 14430 | Oil Rigger | £ 2,151,587,047 | |
| 14431 | Oilfield Industries | £ 9,854,297 | |
| 14432 | oiu | £ 5,498,037 | |
| 14433 | OJ da Juiceman | £ 109,855 | |
| 14434 | OK Tom | £ 213,436,455 | |
| 14435 | OKFurniture | £ 50,000 | |
| 14436 | OKG Shed | £ -329,334 | |
| 14437 | OKS 1 PTE LTD | £ 50,000 | |
| 14438 | OKS PTE LTD | £ 2,148,676 | |
| 14439 | OLafa | £ 5,088,982 | |
| 14440 | Oland Ltd | £ 50,000 | |
| 14441 | Olay | £ 326,245,749 | |
| 14442 | Old | £ 149,114,423 | |
| 14443 | Old Age | £ 428,870,365 | |
| 14444 | Old Bay | £ 123,534,579 | |
| 14445 | Old Bill | £ 45,792,842 | |
| 14446 | Old Carpet | £ 163,972,008 | |
| 14447 | Old company names | £ 46,406,504 | |
| 14448 | old farts | £ 3,542,428,093 | |
| 14449 | Old Feuds | £ 44,696,704 | |
| 14450 | Old Granny | £ 9,329,769 | |
| 14451 | old lard | £ -7,521,344 | |
| 14452 | old legends | £ 14,735,844 | |
| 14453 | Old men | £ 397,899,239 | |
| 14454 | Old No. 7 | £ 694,460,017 | |
| 14455 | Old people | £ 41,298,004 | |
| 14456 | Old Rocker | £ 416,345,265 | |
| 14457 | Old School | £ 5,514,041 | |
| 14458 | old skool butta | £ 614,087 | |
| 14459 | Old Smoky | £ 622,122,584 | |
| 14460 | Old Socks | £ 144,379,758 | |
| 14461 | old to netro | £ 25,144,856 | |
| 14462 | Old Whiskey | £ 21,558,590 | |
| 14463 | Old World Industry | £ 1,734,908 | |
| 14464 | Old World Ventures | £ 50,000 | |
| 14465 | OlDirty | £ 47,991,916 | |
| 14466 | oldschool | £ 121,302,173 | |
| 14467 | Oligarchy | £ 556,860,397 | |
| 14468 | Oligarchy inc. | £ 7,116,723 | |
| 14469 | olis | £ 91,036,818 | |
| 14470 | Oliver Cromwell | £ 220,112,740 | |
| 14471 | Oliver Queen | £ 56,107,912 | |
| 14472 | Olivers Imagination | £ 124,320,555 | |
| 14473 | Ollio Inc. | £ 6,159,098 | |
| 14474 | Ollio2 Inc. | £ -2,232,039 | |
| 14475 | Ollio3 Inc. | £ -680,853 | |
| 14476 | Olrik | £ 22,147,425 | |
| 14477 | Olympia | £ 112,782,553 | |
| 14478 | olympic rings | £ 3,084,696,830 | |
| 14479 | Olympics | £ 5,508,747 | |
| 14480 | Olympus | £ 2,088,931,208 | |
| 14481 | OMD | £ 54,770,371 | |
| 14482 | Omega | £ 6,183,955 | |
| 14483 | Omega Indusries | £ 37,799 | |
| 14484 | OmegaFox Inc. | £ 1,266,634 | |
| 14485 | Omelette | £ 10,061,528 | |
| 14486 | Omens | £ 48,588,989 | |
| 14487 | Omerta | £ 1,007,186,123 | |
| 14488 | Omerta Inc. | £ 5,500,096 | |
| 14489 | Omni | £ 26,585,058 | |
| 14490 | Omni Consumer Products | £ -23,968,848 | |
| 14491 | Omni Future Corp 1 | £ 438,441,309 | |
| 14492 | omni4 | £ 1,185,151 | |
| 14493 | Omnia | £ 29,796,207 | |
| 14494 | Omnifarious | £ 2,072,811,050 | |
| 14495 | Omnificent | £ 2,120,022,090 | |
| 14496 | Omnipotent | £ 1,435,673,338 | |
| 14497 | Omnipresent | £ 1,372,938,155 | |
| 14498 | Omniscient | £ 1,619,785,020 | |
| 14499 | Omnitool | £ 4,640,506 | |
| 14500 | on a stick | £ 13,410 | |
