The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16601 | Oligarchy inc. | £ 7,116,723 | |
| 16602 | olis | £ 91,036,818 | |
| 16603 | Olivers Imagination | £ 124,320,555 | |
| 16604 | olives | £ 568,111,602 | |
| 16605 | Olives ltd | £ 2,575,542 | |
| 16606 | Ollio Inc. | £ 6,159,098 | |
| 16607 | Ollio2 Inc. | £ -2,232,039 | |
| 16608 | Ollio3 Inc. | £ -680,853 | |
| 16609 | Olrik | £ 22,147,425 | |
| 16610 | Olympia | £ 112,782,553 | |
| 16611 | Olympiazuli | £ 45,943,223 | |
| 16612 | olympic rings | £ 3,084,696,830 | |
| 16613 | Olympics | £ 5,508,747 | |
| 16614 | Olympus | £ 2,084,999,378 | |
| 16615 | OMD | £ 333,034,023 | |
| 16616 | Omega | £ 6,183,955 | |
| 16617 | Omega Indusries | £ 37,799 | |
| 16618 | OmegaFox Inc. | £ 1,266,634 | |
| 16619 | Omens | £ 1,431,798,609 | |
| 16620 | Omerta | £ 1,007,186,123 | |
| 16621 | Omerta Inc. | £ 5,500,096 | |
| 16622 | OMG I Need Help | £ 44,701,906 | |
| 16623 | omission | £ 258,806,447 | |
| 16624 | Omni | £ 26,585,058 | |
| 16625 | Omni Consumer Products | £ 32,296,370 | |
| 16626 | Omni Future Corp 1 | £ 855,512,970 | |
| 16627 | omni4 | £ 1,185,151 | |
| 16628 | Omnia | £ 29,796,207 | |
| 16629 | OmniCorp | £ 5,503,691 | |
| 16630 | Omnifarious | £ 2,360,838,488 | |
| 16631 | Omnificent | £ 2,321,277,749 | |
| 16632 | Omnipotent | £ 2,218,375,349 | |
| 16633 | Omnipresent | £ 2,257,248,277 | |
| 16634 | Omniscient | £ 2,478,385,168 | |
| 16635 | Omnitool | £ 4,640,506 | |
| 16636 | on a stick | £ 13,410 | |
| 16637 | On Industries | £ 1,896,074 | |
| 16638 | On It | £ 59,533,659 | |
| 16639 | On My Mind | £ 87,748,385 | |
| 16640 | ON PATCHWERK | £ 399,366,790 | |
| 16641 | On Patrol | £ 148,087,996 | |
| 16642 | On The Fritz | £ 79,242,996 | |
| 16643 | on the hills | £ 29,507,465 | |
| 16644 | On the move | £ 144,453,102 | |
| 16645 | on the road | £ 405,722,546 | |
| 16646 | on yourself | £ 126,998,452 | |
| 16647 | Once In A Blue Moon | £ 46,534,381 | |
| 16648 | Once Upon a Time | £ 24,760,937 | |
| 16649 | Once Were Warriors | £ 54,754,263 | |
| 16650 | one | £ 341,379,992 | |
| 16651 | One and a Half | £ 8,610,014,000 | |
| 16652 | One Company | £ 398,709,264 | |
| 16653 | One Company Rule | £ 3,242,256 | |
| 16654 | one dollar company | £ 40,885,349 | |
| 16655 | One Enterprise | £ 5,940,523 | |
| 16656 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 16657 | One gun | £ 1,381,284,458 | |
| 16658 | One Hit Wonder | £ 30,087,678 | |
| 16659 | One Hundred Netro Bucks | £ 132,828,467 | |
| 16660 | One Insane Rastaman | £ 273,250,880 | |
| 16661 | one love | £ 3,838,898 | |
| 16662 | one man crying | £ 1,050,939,923 | |
| 16663 | One Million | £ 62,485,984 | |
| 16664 | One Mind | £ -5,139,455 | |
| 16665 | one more wont hurt | £ 50,696,231 | |
| 16666 | one of craze | £ 398,067,001 | |
| 16667 | One Piece | £ 11,282,781 | |
| 16668 | One Piece. | £ 40,965,499 | |
| 16669 | One Pound Fish | £ 1,584,921 | |
| 16670 | One Pound Transfers | £ -2,799,952 | |
| 16671 | One Shot | £ 123,851,456 | |
| 16672 | One Silence | £ -4,074 | |
| 16673 | One to Many. | £ 4,976,234 | |
| 16674 | one too many pints | £ 353,128,608 | |
| 16675 | One United | £ 5,379,005 | |
| 16676 | OneHATE | £ 25,247,345 | |
| 16677 | Onenos | £ 113,965,307 | |
| 16678 | oneone | £ 18,206,569 | |
| 16679 | Oner | £ 10,516,756 | |
| 16680 | Onerous | £ 40,516,043 | |
| 16681 | OneStopEnvelopeShoppe | £ -38,952 | |
| 16682 | Onetical | £ 5,502,381 | |
| 16683 | Onioninc | £ -43,613 | |
| 16684 | Onions | £ 56,031,337 | |
| 16685 | ONLINE GAMES | £ 120,242,830 | |
| 16686 | online games. | £ 167,252,652 | |
| 16687 | Only 50k | £ 120,794,156 | |
| 16688 | Only Bombs Allowed | £ 57,741,277 | |
| 16689 | Only Fools and Horses | £ 859,719,219 | |
| 16690 | Only Grans | £ 122,787,706 | |
| 16691 | only me | £ 50,000 | |
| 16692 | only me inc | £ 133,078,068 | |
| 16693 | OnlyDollars | £ 929,042 | |
| 16694 | OnlyMoney | £ 4,556,121 | |
| 16695 | OnlyProfits | £ 5,059,024 | |
| 16696 | OnlyStocks | £ 4,382,795 | |
| 16697 | Onomatopoeias | £ 939,660 | |
| 16698 | Onshore Money | £ 104,918,400 | |
| 16699 | Onslaught | £ 173,378,826 | |
| 16700 | Ontara | £ 79,736,570 | |
