The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12401 | Oak Island | £ 150,452,433 | |
| 12402 | Oak Leaf Enterprise | £ 14,945,592 | |
| 12403 | oakford lodge | £ 59,640,561 | |
| 12404 | Oakland | £ 55,582,086 | |
| 12405 | OakWorld Enterprises | £ 15,885,491 | |
| 12406 | Oar | £ 52,411,144 | |
| 12407 | Oasis | £ 107,322,768 | |
| 12408 | Oasis of the Seas | £ 216,020,159 | |
| 12409 | Oats | £ 66,324,070 | |
| 12410 | OB2 | £ 12,755,887 | |
| 12411 | OB3 | £ 14,269,280 | |
| 12412 | OB4 | £ 15,665,305 | |
| 12413 | OB5 | £ 9,012,088 | |
| 12414 | Obama Proposes | £ 2,061,600 | |
| 12415 | Obar Ardair | £ 387,490,277 | |
| 12416 | Obble | £ 466,184,526 | |
| 12417 | obedience | £ 55,120,702 | |
| 12418 | Obese American | £ 161,429,557 | |
| 12419 | Obi-Wan-Kenobi | £ 100,953,209 | |
| 12420 | Object in Motion | £ 106,865,438 | |
| 12421 | Obliterator | £ 5,501,753 | |
| 12422 | Oblivion | £ 75,985,020 | |
| 12423 | Obsolete | £ 55,457,606 | |
| 12424 | Obtuse | £ 14,379,095 | |
| 12425 | Obviously | £ 2,318,576,665 | |
| 12426 | OCB inc | £ 6,320,804 | |
| 12427 | Occasional Tables | £ 5,328,203 | |
| 12428 | Ocean | £ 52,827,866 | |
| 12429 | ocean star | £ 3,580,849,318 | |
| 12430 | Oceanic Enterprises | £ -50,808 | |
| 12431 | Oceans 11 | £ 58,500,636 | |
| 12432 | Oceans 12 | £ 10,291,638 | |
| 12433 | Oceans 13 | £ 132,219,759 | |
| 12434 | Oceans Eleven | £ 8,485,684 | |
| 12435 | Ocelot | £ 194,460,230 | |
| 12436 | Och Noooo | £ 1,506,119 | |
| 12437 | Octavian | £ 4,631,188 | |
| 12438 | October 2014 | £ 94,385,046 | |
| 12439 | Octopia | £ 9,626,521 | |
| 12440 | Octopus Garden | £ 4,050,927 | |
| 12441 | Oddjob | £ 16,604,273 | |
| 12442 | Odds on Favorite | £ 74,346,727 | |
| 12443 | Oddysay | £ 2,896,867 | |
| 12444 | Odell | £ 13,714,064 | |
| 12445 | Oden | £ 641,394,649 | |
| 12446 | oden wrath | £ 1,705,775,459 | |
| 12447 | odin | £ 8,811,968 | |
| 12448 | Odin Mafia | £ 8,768,668 | |
| 12449 | Odin the Wanderer | £ 4,687,105 | |
| 12450 | Odo | £ 32,513,900 | |
| 12451 | Odqan | £ 362,689,804 | |
| 12452 | Odyssey | £ 329,493,997 | |
| 12453 | of a black widow | £ 196,069,515 | |
| 12454 | Of a Brutal Empire | £ 36,359,377 | |
| 12455 | of a Solar Empire | £ 46,660,163 | |
| 12456 | Of All Your Land | £ 48,121,892 | |
| 12457 | Of Bomb | £ 5,131,350 | |
| 12458 | of CFC | £ 5,455,120 | |
| 12459 | of Elm Street | £ 49,875 | |
| 12460 | Of Every Position | £ 61,887,884 | |
| 12461 | Of Friday the 13th | £ 50,000 | |
| 12462 | Of Green Bay | £ 7,216,016 | |
| 12463 | of Impendium | £ 349,441 | |
| 12464 | of Long Stockings | £ 16,738,335 | |
| 12465 | Of Minisotta | £ 1,716,607 | |
| 12466 | Of My Label | £ 259,180,689 | |
| 12467 | of of | £ 7,075,463 | |
| 12468 | of of of | £ 4,201,365 | |
| 12469 | of REASON | £ 1,154,429 | |
| 12470 | of RHC | £ 68,042,901 | |
| 12471 | Of Scotland | £ 1,304,795,018 | |
| 12472 | of the devil | £ 27,539,344 | |
| 12473 | of The Hat | £ 5,507,097 | |
| 12474 | of the heap | £ 66,771,581 | |
| 12475 | of the lost | £ 69,257,675 | |
| 12476 | of the monsters | £ 41,126,098 | |
| 12477 | Of The Road | £ 146,979,140 | |
| 12478 | of the runite | £ 4,694,589 | |
| 12479 | Of The UVF | £ 133,321,393 | |
| 12480 | Of the world | £ 2,007,785 | |
| 12481 | Of Time | £ 372,360,923 | |
| 12482 | of. | £ 335,457,109 | |
| 12483 | Ofcom | £ 321,215,302 | |
| 12484 | Off | £ 25,794,080 | |
| 12485 | off it | £ 5,261,275 | |
| 12486 | Offenbach | £ 382,674,581 | |
| 12487 | Offensive Behaviour | £ 496,195,000 | |
| 12488 | office | £ 790,322,022 | |
| 12489 | Offroad Trucker | £ 359,215,778 | |
| 12490 | Offshore | £ 367,643,133 | |
| 12491 | Offshore Accounts | £ 140,823,548 | |
| 12492 | Offshore Cash | £ 60,279,702 | |
| 12493 | og esaelP | £ 4,208,484 | |
| 12494 | ogkush | £ 2,491,394 | |
| 12495 | Ogrimmar | £ 35,379,515 | |
| 12496 | Oh Herro | £ 2,995,837 | |
| 12497 | Oh Jesus Christ | £ 9,142,153 | |
| 12498 | Oh No | £ 187,814,618 | |
| 12499 | Oh YEAH | £ 2,549,726 | |
| 12500 | ohara inc | £ -165,571 | |
