The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 15701 | Olrik | £ 22,147,425 | |
| 15702 | Olympia | £ 112,782,553 | |
| 15703 | olympic rings | £ 3,084,696,830 | |
| 15704 | Olympics | £ 5,508,747 | |
| 15705 | Olympus | £ 2,084,999,378 | |
| 15706 | OMD | £ 323,660,620 | |
| 15707 | Omega | £ 6,183,955 | |
| 15708 | Omega Indusries | £ 37,799 | |
| 15709 | OmegaFox Inc. | £ 1,266,634 | |
| 15710 | Omens | £ 1,308,554,469 | |
| 15711 | Omerta | £ 1,007,186,123 | |
| 15712 | Omerta Inc. | £ 5,500,096 | |
| 15713 | omission | £ 19,080,962 | |
| 15714 | Omni | £ 26,585,058 | |
| 15715 | Omni Consumer Products | £ 32,296,370 | |
| 15716 | Omni Future Corp 1 | £ 855,512,970 | |
| 15717 | omni4 | £ 1,185,151 | |
| 15718 | Omnia | £ 29,796,207 | |
| 15719 | OmniCorp | £ 5,503,691 | |
| 15720 | Omnifarious | £ 2,360,838,488 | |
| 15721 | Omnificent | £ 2,321,277,749 | |
| 15722 | Omnipotent | £ 2,218,375,349 | |
| 15723 | Omnipresent | £ 2,257,248,277 | |
| 15724 | Omniscient | £ 2,478,385,168 | |
| 15725 | Omnitool | £ 4,640,506 | |
| 15726 | on a stick | £ 13,410 | |
| 15727 | On Industries | £ 1,896,074 | |
| 15728 | On It | £ 59,533,659 | |
| 15729 | On My Mind | £ 87,748,385 | |
| 15730 | ON PATCHWERK | £ 399,366,790 | |
| 15731 | On Patrol | £ 60,328,428 | |
| 15732 | On the Buses | £ 12,257,373 | |
| 15733 | On The Fritz | £ 79,242,996 | |
| 15734 | On the move | £ 144,453,102 | |
| 15735 | on the road | £ 405,722,546 | |
| 15736 | on yourself | £ 126,998,452 | |
| 15737 | Once Upon a Time | £ 24,760,937 | |
| 15738 | Once Were Warriors | £ 54,754,263 | |
| 15739 | one | £ 341,379,992 | |
| 15740 | One and a Half | £ 8,610,014,000 | |
| 15741 | One Company | £ 398,709,264 | |
| 15742 | one dollar company | £ 40,885,349 | |
| 15743 | One Enterprise | £ 5,940,523 | |
| 15744 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 15745 | One for the road | £ 2,130,518 | |
| 15746 | One gun | £ 1,381,284,458 | |
| 15747 | One Hit Wonder | £ 30,087,678 | |
| 15748 | One Hundred Netro Bucks | £ 132,828,467 | |
| 15749 | One Insane Rastaman | £ 273,250,880 | |
| 15750 | one love | £ 3,838,898 | |
| 15751 | one man crying | £ 1,050,939,923 | |
| 15752 | One Mind | £ -5,139,455 | |
| 15753 | one of craze | £ 398,067,001 | |
| 15754 | One Piece | £ 11,282,781 | |
| 15755 | One Piece. | £ 240,965,499 | |
| 15756 | One Pound Fish | £ 1,584,921 | |
| 15757 | One Pound Transfers | £ -2,799,952 | |
| 15758 | One Shot | £ 123,851,456 | |
| 15759 | One Silence | £ -4,074 | |
| 15760 | One to Many. | £ 4,976,234 | |
| 15761 | one too many pints | £ 126,749,003 | |
| 15762 | One United | £ 5,379,005 | |
| 15763 | OneHATE | £ 155,640,603 | |
| 15764 | Onenos | £ 1,018,446,410 | |
| 15765 | oneone | £ 18,206,569 | |
| 15766 | Oner | £ 10,516,756 | |
| 15767 | Onerous | £ 42,731,947 | |
| 15768 | OneStopEnvelopeShoppe | £ -38,952 | |
| 15769 | Onetical | £ 5,502,381 | |
| 15770 | Onioninc | £ -43,613 | |
| 15771 | Onions | £ 56,031,337 | |
| 15772 | ONLINE GAMES | £ 120,242,830 | |
| 15773 | online games. | £ 167,252,652 | |
| 15774 | Only 50k | £ 120,794,156 | |
| 15775 | Only Bombs Allowed | £ 57,741,277 | |
| 15776 | Only Fools and Horses | £ 859,719,219 | |
| 15777 | only me | £ 50,000 | |
| 15778 | only me inc | £ 133,078,068 | |
| 15779 | OnlyDollars | £ 929,042 | |
| 15780 | OnlyMoney | £ 4,556,121 | |
| 15781 | OnlyProfits | £ 5,059,024 | |
| 15782 | OnlyStocks | £ 4,382,795 | |
| 15783 | Onomatopoeias | £ 939,660 | |
| 15784 | Onshore Money | £ 104,918,400 | |
| 15785 | Ontara | £ 79,736,570 | |
| 15786 | Ontario | £ 159,783,223 | |
| 15787 | ontheblock | £ 6,402,837 | |
| 15788 | Onyx | £ 429,592 | |
| 15789 | OO7 | £ 24,682,212 | |
| 15790 | Oodnadatta | £ 1,400,000 | |
| 15791 | Ooglaigh na Heireann | £ 240,713,877 | |
| 15792 | oohyeaa | £ 50,844,745 | |
| 15793 | Oolacile-01 | £ 3,643,194 | |
| 15794 | oOoOo | £ 82,717,145 | |
| 15795 | oooooo | £ 5,505,528 | |
| 15796 | OOOoooOOO | £ 614,697 | |
| 15797 | oooPPPooo | £ -53,065 | |
| 15798 | oops | £ 965,477 | |
| 15799 | ooz | £ 320,966,832 | |
| 15800 | Opal Opal | £ 5,502,194 | |
