The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 14701 | Obviously | £ 2,318,576,665 | |
| 14702 | Ocarina of Time | £ -1,574,201 | |
| 14703 | OCB inc | £ 6,320,804 | |
| 14704 | Occasional Tables | £ 5,328,203 | |
| 14705 | Ocean | £ 52,827,866 | |
| 14706 | Ocean Beach Club | £ 908,730,232 | |
| 14707 | Ocean Defence | £ 345,683,880 | |
| 14708 | ocean star | £ 3,580,849,318 | |
| 14709 | Ocean Templar | £ 605,680,260 | |
| 14710 | Oceanic Enterprises | £ -50,808 | |
| 14711 | Oceans 11 | £ 58,500,636 | |
| 14712 | Oceans 12 | £ 10,291,638 | |
| 14713 | Oceans 13 | £ 132,219,759 | |
| 14714 | Oceans Eleven | £ 8,485,684 | |
| 14715 | Ocelot | £ 194,460,230 | |
| 14716 | Och Noooo | £ 1,506,119 | |
| 14717 | Octavian | £ 4,631,188 | |
| 14718 | October 1066 | £ 81,732,927 | |
| 14719 | October 1854 | £ 290,795,624 | |
| 14720 | October 2014 | £ 94,385,046 | |
| 14721 | Octopia | £ 9,626,521 | |
| 14722 | Octopus Garden | £ 4,050,927 | |
| 14723 | Oddjob | £ 16,604,273 | |
| 14724 | Odds and ends | £ 111,837,900 | |
| 14725 | Odds on Favorite | £ 74,346,727 | |
| 14726 | Oddysay | £ 2,896,867 | |
| 14727 | Odell | £ 13,714,064 | |
| 14728 | Oden | £ 641,394,649 | |
| 14729 | oden wrath | £ 1,735,842,850 | |
| 14730 | odin | £ 8,811,968 | |
| 14731 | Odin Mafia | £ 8,768,668 | |
| 14732 | Odin the Wanderer | £ 4,687,105 | |
| 14733 | Odo | £ 32,513,900 | |
| 14734 | Odqan | £ 151,624,104 | |
| 14735 | Odyssey | £ 329,493,997 | |
| 14736 | of a black widow | £ 196,069,515 | |
| 14737 | Of a Brutal Empire | £ 36,359,377 | |
| 14738 | of a Solar Empire | £ 46,660,163 | |
| 14739 | Of A Time | £ 27,824,181 | |
| 14740 | Of All Your Land | £ 48,121,892 | |
| 14741 | Of Bomb | £ 5,131,350 | |
| 14742 | of CFC | £ 5,455,120 | |
| 14743 | Of Every Position | £ 61,887,884 | |
| 14744 | Of Friday the 13th | £ 50,000 | |
| 14745 | of Impendium | £ 349,441 | |
| 14746 | of Long Stockings | £ 16,738,335 | |
| 14747 | Of My Label | £ 367,377,610 | |
| 14748 | of of | £ 7,075,463 | |
| 14749 | of REASON | £ 1,154,429 | |
| 14750 | of RHC | £ 68,042,901 | |
| 14751 | Of Scotland | £ 1,304,795,018 | |
| 14752 | Of The Boards | £ 14,794,127 | |
| 14753 | of the devil | £ 27,539,344 | |
| 14754 | of The Hat | £ 5,507,097 | |
| 14755 | of the heap | £ 66,771,581 | |
| 14756 | of the lost | £ 69,257,675 | |
| 14757 | of the monsters | £ 41,126,098 | |
| 14758 | Of The Road | £ 146,979,140 | |
| 14759 | of the runite | £ 4,694,589 | |
| 14760 | Of The UVF | £ 133,321,393 | |
| 14761 | Of the world | £ 2,007,785 | |
| 14762 | of. | £ 335,457,109 | |
| 14763 | Ofcom | £ 306,858,410 | |
| 14764 | Off | £ 25,794,080 | |
| 14765 | Off His Trolly | £ 10,806,044 | |
| 14766 | off it | £ 5,261,275 | |
| 14767 | Offenbach | £ 382,674,581 | |
| 14768 | Offender | £ 114,140,078 | |
| 14769 | Offensive Behaviour | £ 509,861,247 | |
| 14770 | Offensive Security | £ 121,103,683 | |
| 14771 | Official Location | £ 179,832,369 | |
| 14772 | OfflineTV | £ 56,600,622 | |
| 14773 | Offroad Trucker | £ 81,199,526 | |
| 14774 | Offshore Cash | £ 60,279,702 | |
| 14775 | og esaelP | £ 4,208,484 | |
| 14776 | ogkush | £ 2,491,394 | |
| 14777 | Ogrimmar | £ 35,379,515 | |
| 14778 | Oh Herro | £ 2,995,837 | |
| 14779 | Oh Jesus Christ | £ 9,142,153 | |
| 14780 | Oh No | £ 118,214,150 | |
| 14781 | Oh YEAH | £ 2,549,726 | |
| 14782 | ohara inc | £ -165,571 | |
| 14783 | ohe herrow | £ 5,703,509 | |
| 14784 | Ohms | £ 120,622,003 | |
| 14785 | Ohnoitsmymothernlaw | £ 5,504,562 | |
| 14786 | Ohtaku inc | £ 3,600,029 | |
| 14787 | Ohtaku inc1 | £ 4,456,703 | |
| 14788 | Ohtaku inc2 | £ 1,267,353 | |
| 14789 | Ohtaku inc3 | £ 4,191,984 | |
| 14790 | Ohtaku inc4 | £ 4,118,968 | |
| 14791 | ohyesyesh | £ 50,000 | |
| 14792 | Oil | £ 833,968,470 | |
| 14793 | Oil CONGLOMO | £ 2,646,845 | |
| 14794 | Oil Field | £ 271,568 | |
| 14795 | Oil First | £ 49,880 | |
| 14796 | Oil Inc | £ 1,610,027 | |
| 14797 | Oil Industry | £ 4,441,721 | |
| 14798 | Oil Rigger | £ 2,151,587,047 | |
| 14799 | Oilfield Industries | £ 9,854,297 | |
| 14800 | oiu | £ 5,498,037 | |
