The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 11701 | Obtuse | £ 14,379,095 | |
| 11702 | Obviously | £ 2,318,576,665 | |
| 11703 | OCB inc | £ 6,320,804 | |
| 11704 | Occasional Tables | £ 5,328,203 | |
| 11705 | Ocean | £ 52,827,866 | |
| 11706 | ocean star | £ 3,580,849,318 | |
| 11707 | Oceanic Enterprises | £ -50,808 | |
| 11708 | Oceans 11 | £ 58,500,636 | |
| 11709 | Oceans 12 | £ 10,291,638 | |
| 11710 | Oceans 13 | £ 132,219,759 | |
| 11711 | Oceans Eleven | £ 8,485,684 | |
| 11712 | Ocelot | £ 194,460,230 | |
| 11713 | Och Noooo | £ 1,506,119 | |
| 11714 | Octavian | £ 4,631,188 | |
| 11715 | October 2014 | £ 94,385,046 | |
| 11716 | Octopia | £ 9,626,521 | |
| 11717 | Octopus Garden | £ 4,050,927 | |
| 11718 | Oddjob | £ 16,604,273 | |
| 11719 | Odds on Favorite | £ 74,346,727 | |
| 11720 | Oddysay | £ 2,896,867 | |
| 11721 | Odell | £ 13,714,064 | |
| 11722 | Oden | £ 641,394,649 | |
| 11723 | oden wrath | £ 793,629,166 | |
| 11724 | odin | £ 8,811,968 | |
| 11725 | Odin Mafia | £ 8,768,668 | |
| 11726 | Odin the Wanderer | £ 4,687,105 | |
| 11727 | Odo | £ 32,513,900 | |
| 11728 | Odqan | £ 137,101,957 | |
| 11729 | Odyssey | £ 329,493,997 | |
| 11730 | of a black widow | £ 196,069,515 | |
| 11731 | Of a Brutal Empire | £ 36,359,377 | |
| 11732 | of a Solar Empire | £ 46,660,163 | |
| 11733 | Of All Your Land | £ 48,121,892 | |
| 11734 | Of Bomb | £ 5,131,350 | |
| 11735 | of CFC | £ 5,455,120 | |
| 11736 | of Elm Street | £ 49,875 | |
| 11737 | Of Every Position | £ 61,887,884 | |
| 11738 | Of Friday the 13th | £ 50,000 | |
| 11739 | Of Green Bay | £ 7,216,016 | |
| 11740 | of Impendium | £ 349,441 | |
| 11741 | of Long Stockings | £ 16,738,335 | |
| 11742 | Of Minisotta | £ 1,716,607 | |
| 11743 | Of My Label | £ 241,830,978 | |
| 11744 | of of | £ 7,075,463 | |
| 11745 | of REASON | £ 1,154,429 | |
| 11746 | of RHC | £ 68,042,901 | |
| 11747 | Of Scotland | £ 1,487,181,271 | |
| 11748 | of the devil | £ 27,539,344 | |
| 11749 | of The Hat | £ 5,507,097 | |
| 11750 | of the heap | £ 66,771,581 | |
| 11751 | of the lost | £ 69,257,675 | |
| 11752 | of the monsters | £ 41,126,098 | |
| 11753 | Of The Road | £ 146,979,140 | |
| 11754 | of the runite | £ 4,694,589 | |
| 11755 | Of The UVF | £ 133,321,393 | |
| 11756 | Of the world | £ 2,007,785 | |
| 11757 | Of Time | £ 372,360,923 | |
| 11758 | of. | £ 335,457,109 | |
| 11759 | Ofcom | £ 302,359,505 | |
| 11760 | Off | £ 22,361,365 | |
| 11761 | off it | £ 5,261,275 | |
| 11762 | Offenbach | £ 382,674,581 | |
| 11763 | Offensive Behaviour | £ 495,994,009 | |
| 11764 | office | £ 583,073,455 | |
| 11765 | Offroad Trucker | £ 224,091,781 | |
| 11766 | Offshore | £ 367,643,133 | |
| 11767 | Offshore Accounts | £ 140,823,548 | |
| 11768 | Offshore Cash | £ 60,279,702 | |
| 11769 | og esaelP | £ 4,208,484 | |
| 11770 | ogkush | £ 2,491,394 | |
| 11771 | Ogrimmar | £ 35,379,515 | |
| 11772 | Oh Herro | £ 2,995,837 | |
| 11773 | Oh Jesus Christ | £ 9,142,153 | |
| 11774 | Oh YEAH | £ 2,549,726 | |
| 11775 | ohara inc | £ -165,571 | |
| 11776 | ohe herrow | £ 5,703,509 | |
| 11777 | Ohnoitsmymothernlaw | £ 5,504,562 | |
| 11778 | Ohtaku inc | £ 3,600,029 | |
| 11779 | Ohtaku inc1 | £ 4,456,703 | |
| 11780 | Ohtaku inc2 | £ 1,267,353 | |
| 11781 | Ohtaku inc3 | £ 4,191,984 | |
| 11782 | Ohtaku inc4 | £ 4,118,968 | |
| 11783 | ohyesyesh | £ 50,000 | |
| 11784 | Oil | £ 833,968,470 | |
| 11785 | Oil CONGLOMO | £ 2,646,845 | |
| 11786 | Oil Field | £ 271,568 | |
| 11787 | Oil Inc | £ 1,596,655 | |
| 11788 | Oil Industry | £ 4,441,721 | |
| 11789 | Oil Rigger | £ 2,151,587,047 | |
| 11790 | Oilfield Industries | £ 9,854,297 | |
| 11791 | oiu | £ 5,498,037 | |
| 11792 | OJ da Juiceman | £ 109,855 | |
| 11793 | OK Tom | £ 153,936,455 | |
| 11794 | OKFurniture | £ 50,000 | |
| 11795 | OKG Shed | £ -329,334 | |
| 11796 | OKS 1 PTE LTD | £ 50,000 | |
| 11797 | OKS PTE LTD | £ 2,148,676 | |
| 11798 | OLafa | £ 5,088,982 | |
| 11799 | Oland Ltd | £ 50,000 | |
| 11800 | Olay | £ 290,473,960 | |
