The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16401 | Omni Consumer Products | £ 32,296,370 | |
| 16402 | Omni Future Corp 1 | £ 855,512,970 | |
| 16403 | omni4 | £ 1,185,151 | |
| 16404 | OmniCorp | £ 5,503,691 | |
| 16405 | Omnifarious | £ 2,360,838,488 | |
| 16406 | Omnificent | £ 2,321,277,749 | |
| 16407 | Omnipotent | £ 2,218,375,349 | |
| 16408 | Omnipresent | £ 2,257,248,277 | |
| 16409 | Omniscient | £ 2,478,385,168 | |
| 16410 | Omnitool | £ 4,640,506 | |
| 16411 | on a stick | £ 13,410 | |
| 16412 | On Industries | £ 1,896,074 | |
| 16413 | On It | £ 59,533,659 | |
| 16414 | On My Mind | £ 87,748,385 | |
| 16415 | ON PATCHWERK | £ 399,366,790 | |
| 16416 | On Patrol | £ 11,349,887 | |
| 16417 | On The Fritz | £ 79,242,996 | |
| 16418 | on the hills | £ 95,885,887 | |
| 16419 | On the move | £ 144,453,102 | |
| 16420 | on the road | £ 405,722,546 | |
| 16421 | on yourself | £ 126,998,452 | |
| 16422 | Once In A Blue Moon | £ 48,870,690 | |
| 16423 | Once Upon a Time | £ 24,760,937 | |
| 16424 | Once Were Warriors | £ 54,754,263 | |
| 16425 | one | £ 341,379,992 | |
| 16426 | One and a Half | £ 8,610,014,000 | |
| 16427 | One Company | £ 398,709,264 | |
| 16428 | One Company Rule | £ 51,242,256 | |
| 16429 | one dollar company | £ 40,885,349 | |
| 16430 | One Enterprise | £ 5,940,523 | |
| 16431 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 16432 | One gun | £ 1,381,284,458 | |
| 16433 | One Hit Wonder | £ 30,087,678 | |
| 16434 | One Hundred Netro Bucks | £ 132,828,467 | |
| 16435 | One Insane Rastaman | £ 273,250,880 | |
| 16436 | one love | £ 3,838,898 | |
| 16437 | one man crying | £ 1,050,939,923 | |
| 16438 | One Million | £ 174,911,956 | |
| 16439 | One Mind | £ -5,139,455 | |
| 16440 | One Misstep...GONE | £ 4,010,547 | |
| 16441 | one more wont hurt | £ 36,274,610 | |
| 16442 | one of craze | £ 398,067,001 | |
| 16443 | One Piece | £ 11,282,781 | |
| 16444 | One Piece. | £ 40,965,499 | |
| 16445 | One Pound Fish | £ 1,584,921 | |
| 16446 | One Pound Transfers | £ -2,799,952 | |
| 16447 | One Shot | £ 123,851,456 | |
| 16448 | One Silence | £ -4,074 | |
| 16449 | One to Many. | £ 4,976,234 | |
| 16450 | one too many pints | £ 353,128,608 | |
| 16451 | One United | £ 5,379,005 | |
| 16452 | OneHATE | £ 67,247,345 | |
| 16453 | Onenos | £ 115,361,334 | |
| 16454 | oneone | £ 18,206,569 | |
| 16455 | Oner | £ 10,516,756 | |
| 16456 | OneStopEnvelopeShoppe | £ -38,952 | |
| 16457 | Onetical | £ 5,502,381 | |
| 16458 | Onioninc | £ -43,613 | |
| 16459 | Onions | £ 56,031,337 | |
| 16460 | ONLINE GAMES | £ 147,767,932 | |
| 16461 | online games. | £ 167,252,652 | |
| 16462 | Only 50k | £ 120,794,156 | |
| 16463 | Only Bombs Allowed | £ 57,741,277 | |
| 16464 | Only Fools and Horses | £ 859,719,219 | |
| 16465 | Only Grans | £ 122,787,706 | |
| 16466 | only me | £ 50,000 | |
| 16467 | only me inc | £ 133,078,068 | |
| 16468 | OnlyDollars | £ 929,042 | |
| 16469 | OnlyMoney | £ 4,556,121 | |
| 16470 | OnlyProfits | £ 5,059,024 | |
| 16471 | OnlyStocks | £ 4,382,795 | |
| 16472 | Onomatopoeias | £ 939,660 | |
| 16473 | Onshore Money | £ 104,918,400 | |
| 16474 | Onslaught | £ 173,378,826 | |
| 16475 | Ontara | £ 79,736,570 | |
| 16476 | Ontario | £ 159,783,223 | |
| 16477 | ontheblock | £ 6,402,837 | |
| 16478 | Onyx | £ 429,592 | |
| 16479 | OO7 | £ 24,682,212 | |
| 16480 | Ooglaigh na Heireann | £ 240,713,877 | |
| 16481 | oohyeaa | £ 50,844,745 | |
| 16482 | Oolacile-01 | £ 3,643,194 | |
| 16483 | oOoOo | £ 82,717,145 | |
| 16484 | oooooo | £ 5,505,528 | |
| 16485 | OOOoooOOO | £ 18,588,312 | |
| 16486 | oooPPPooo | £ -53,065 | |
| 16487 | oops | £ 965,477 | |
| 16488 | ooz | £ 320,966,832 | |
| 16489 | Opal Opal | £ 5,502,194 | |
| 16490 | Opec | £ 1,574,677,165 | |
| 16491 | Opel Dire | £ 5,505,993 | |
| 16492 | Open AI | £ 50,000 | |
| 16493 | OpEn FoR BuIsNeSs | £ 5,785,269 | |
| 16494 | OpenAI | £ 4,899,943 | |
| 16495 | Openhammer | £ 37,087,124 | |
| 16496 | Opera House | £ 123,137,933 | |
| 16497 | operating systems | £ 46,156,045 | |
| 16498 | Operation Centerboard | £ 45,661,943 | |
| 16499 | OPERATION SEALION | £ 10,353,786 | |
| 16500 | OPERATION SEALION 2 | £ 5,504,218 | |
