The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12401 | Osakin | £ 6,161,131 | |
| 12402 | osca-websites | £ 9,181,996 | |
| 12403 | Oscar Meyer | £ 5,773,809 | |
| 12404 | Oscorp Industries | £ 179,374 | |
| 12405 | Osipolis | £ 16,660,041 | |
| 12406 | Osiris | £ 225,126,101 | |
| 12407 | osiris666 | £ -1,880,407 | |
| 12408 | osiris6971 | £ 10,377,105 | |
| 12409 | Osmosis | £ 36,967,752 | |
| 12410 | Osprey Close | £ 53,590,765 | |
| 12411 | other comps | £ 171,572,056 | |
| 12412 | Otherones | £ 61,853,286 | |
| 12413 | Others | £ 26,039,960 | |
| 12414 | otherwil | £ 133,717 | |
| 12415 | otherwil2 | £ -34,567,223 | |
| 12416 | otherwil3 | £ 1,893,225 | |
| 12417 | otherwil4 | £ 4,826,025 | |
| 12418 | otherwil5 | £ 829,030 | |
| 12419 | Ottawa | £ 44,778,874 | |
| 12420 | Otto | £ 511,521,836 | |
| 12421 | OU812 | £ 295,106,966 | |
| 12422 | Ouija Industries | £ 345,812 | |
| 12423 | our butterfly | £ 1,134,896,288 | |
| 12424 | Our Discontent | £ 5,507,855 | |
| 12425 | Our Dollar | £ 173,827,178 | |
| 12426 | Our Doorstep | £ 1,396,159 | |
| 12427 | Our Golden Years | £ 908,659,300 | |
| 12428 | Our Good Name | £ 571,345,968 | |
| 12429 | Our Happy Memories | £ 34,408,558 | |
| 12430 | our judgement | £ 621,639,331 | |
| 12431 | our lifes | £ 127,361,789 | |
| 12432 | Our Lives | £ 60,309,789 | |
| 12433 | our Lord | £ 5,790,277 | |
| 12434 | Our Loved Ones | £ 106,677,737 | |
| 12435 | Our Times | £ 1,742,749 | |
| 12436 | Ours | £ 191,746,347 | |
| 12437 | Ourselves | £ 91,484,866 | |
| 12438 | out | £ 85,981,569 | |
| 12439 | Out of Nothing | £ 1,503,708 | |
| 12440 | Out Of The Blue | £ 946,989,643 | |
| 12441 | Out of town | £ 586,926 | |
| 12442 | Out You Go | £ 39,675,860 | |
| 12443 | outbreak | £ 561,418,136 | |
| 12444 | Outer Haven | £ 1,440,720 | |
| 12445 | Outer Heaven | £ 58,665,319 | |
| 12446 | Outlandish Labs LLC | £ 1,478,185 | |
| 12447 | Outlands | £ 155,639,513 | |
| 12448 | Outlaw | £ 4,594,026 | |
| 12449 | Outletsales | £ 1,793,596 | |
| 12450 | Outrageous Fortune | £ 210,155,594 | |
| 12451 | Outsourcing LLC | £ 4,372,708 | |
| 12452 | Outtathisworld plc | £ 1,236,092 | |
| 12453 | Outworld | £ 75,608,832 | |
| 12454 | Ovation | £ 2,547,061 | |
| 12455 | Over A Pub | £ 97,048,135 | |
| 12456 | Over Priced | £ 73,067,141 | |
| 12457 | overflowing bog | £ 11,871,021 | |
| 12458 | overHelming | £ 491,414,184 | |
| 12459 | Overmeire | £ 5,506,415 | |
| 12460 | Overpoort | £ 2,764,404 | |
| 12461 | Overpovered | £ 1,092,543 | |
| 12462 | Override | £ 17,139,813 | |
| 12463 | OverThor | £ 5,507,873 | |
| 12464 | Overwatch | £ 215,454,246 | |
| 12465 | Overwatch LTD | £ 57,470,387 | |
| 12466 | Ovine Flu | £ 171,111,198 | |
| 12467 | ow3n pte ltd | £ 3,307,504 | |
| 12468 | Owens Enterprise | £ 1,179,577,364 | |
| 12469 | OWLF | £ 2,914,903 | |
| 12470 | Owls | £ 425,596,680 | |
| 12471 | owned | £ 5,486,100 | |
| 12472 | Owned2EU | £ -76,039,189 | |
| 12473 | Owned3EU | £ 2,813,019 | |
| 12474 | Owned4EU | £ -11,748,456 | |
| 12475 | Owner | £ 6,354,110 | |
| 12476 | Owning This Land | £ -869,747 | |
| 12477 | oWoTYRANNYoWo | £ 379,686,758 | |
| 12478 | OWWWW | £ 5,508,284 | |
| 12479 | Oxcide | £ 12,818,579 | |
| 12480 | Oxford | £ 124,487,202 | |
| 12481 | OXO | £ 614,294,513 | |
| 12482 | Oxtail Soup | £ 103,967,721 | |
| 12483 | Oxy Clean | £ 71,691,928 | |
| 12484 | OXYCODONE | £ 1,199,533,356 | |
| 12485 | Oxygen | £ 215,261,376 | |
| 12486 | Oz and Goodwin | £ 4,583,012 | |
| 12487 | Ozz | £ 89,779,013 | |
| 12488 | P a p a r a z z i | £ 178,441,792 | |
| 12489 | P.A.F.C | £ 191,432 | |
| 12490 | P1GLTD | £ 19,292 | |
| 12491 | paal met bijen | £ 8,480,544 | |
| 12492 | Pabst | £ 52,512,217 | |
| 12493 | PACE | £ 70,619,715 | |
| 12494 | PACE10000 | £ -134,527 | |
| 12495 | Pacha | £ 486,914,632 | |
| 12496 | Pacific Injustice | £ 88,830,701 | |
| 12497 | PacIndustries | £ 10,669 | |
| 12498 | Package | £ 5,501,542 | |
| 12499 | PACKERS | £ 50,000 | |
| 12500 | Packwood holdings | £ 35,593,693 | |
