The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 11601 | Onion of Arabia | £ 11,458,256 | |
| 11602 | Onions | £ 56,031,337 | |
| 11603 | onions inc | £ 46,832,459 | |
| 11604 | ONLINE GAMES | £ 120,242,830 | |
| 11605 | Online University | £ 36,809,788 | |
| 11606 | Only Bombs Allowed | £ 57,741,277 | |
| 11607 | Only Fools and Horses | £ 108,350,057 | |
| 11608 | only me | £ 50,000 | |
| 11609 | only me inc | £ 133,078,068 | |
| 11610 | Onomatopoeias | £ 939,660 | |
| 11611 | Onshore Money | £ 104,918,400 | |
| 11612 | Ontara | £ 79,736,570 | |
| 11613 | Ontario | £ 85,260,376 | |
| 11614 | ontheblock | £ 6,402,837 | |
| 11615 | Onyx | £ 429,592 | |
| 11616 | Ooglaigh na Heireann | £ 240,713,877 | |
| 11617 | oohyeaa | £ 50,844,745 | |
| 11618 | Oolacile-01 | £ 2,954,344 | |
| 11619 | oOoOo | £ 60,043,338 | |
| 11620 | oooooo | £ 5,505,528 | |
| 11621 | OOOoooOOO | £ 614,697 | |
| 11622 | oooPPPooo | £ -53,065 | |
| 11623 | oops | £ 965,477 | |
| 11624 | ooz | £ 320,966,832 | |
| 11625 | Opal Opal | £ 5,502,194 | |
| 11626 | Opel Dire | £ 5,505,993 | |
| 11627 | OpEn FoR BuIsNeSs | £ 5,785,269 | |
| 11628 | Operation Racoon City | £ 4,748,173 | |
| 11629 | Operations | £ 8,189,228 | |
| 11630 | Ophthalmology | £ 45,575,639 | |
| 11631 | opiates | £ 10,578,986 | |
| 11632 | Opinion | £ 389,953,431 | |
| 11633 | OPiuM | £ 115,856,941 | |
| 11634 | Oppa Gangnam Style | £ 65,242,420 | |
| 11635 | Oppenheim | £ 51,959,450 | |
| 11636 | Oppertunity | £ 458,210,505 | |
| 11637 | Opportunity | £ 11,354,079 | |
| 11638 | Opposition | £ 761,831,311 | |
| 11639 | Oppression | £ 416,055,267 | |
| 11640 | optical | £ 161,474,550 | |
| 11641 | Optimal Flames | £ 162,539,380 | |
| 11642 | Optimum Nutrition | £ -3,018,246 | |
| 11643 | Optimus Inc. | £ -2,482,292 | |
| 11644 | Options | £ 84,494,650 | |
| 11645 | Opus Dei | £ 694,720,428 | |
| 11646 | opus technology | £ 35,372,824 | |
| 11647 | Oracle | £ 5,067,108 | |
| 11648 | Orange | £ 24,725,264 | |
| 11649 | Orange Aftershock | £ 67,681,186 | |
| 11650 | Orange Castle | £ 615,362 | |
| 11651 | Orange Creatine | £ 6,196,167 | |
| 11652 | Orange Jelly | £ 6,594,926 | |
| 11653 | Orange Jooze | £ 1,261,621 | |
| 11654 | Orange Jooze 3 | £ 50,000 | |
| 11655 | Orange Jooze2 | £ 795,888 | |
| 11656 | Orange Jooze4 | £ 50,000 | |
| 11657 | Orange Jooze5 | £ 50,000 | |
| 11658 | Orange Paint | £ 97,288,036 | |
| 11659 | Oranginal | £ 4,103,756 | |
| 11660 | oranje | £ 4,966,784 | |
| 11661 | Orbital | £ 54,539,946 | |
| 11662 | Orbital Bombardment | £ 409,365,804 | |
| 11663 | Orchids R Us Ltd | £ 39,331,588 | |
| 11664 | orcs | £ 2,356,271,158 | |
| 11665 | Orcustra | £ 702,800 | |
| 11666 | Order | £ 176,233,665 | |
| 11667 | Oregon | £ 111,775,168 | |
| 11668 | OREO | £ 64,657,012 | |
| 11669 | Org | £ 18,286,924 | |
| 11670 | Organics Ltd | £ 105,054,559 | |
| 11671 | Organised Crime | £ 17,216,443 | |
| 11672 | Organized Crime | £ 62,808,878 | |
| 11673 | Orgia Co. | £ 4,887,593 | |
| 11674 | Orgy | £ 4,311,652,261 | |
| 11675 | Origin yartley | £ 37,041,694 | |
| 11676 | Original 16 | £ 128,464,725 | |
| 11677 | Original Sin | £ 141,442,446 | |
| 11678 | Originality | £ 1,256,459,199 | |
| 11679 | Origins | £ 63,035,912 | |
| 11680 | Orion | £ 47,648,728 | |
| 11681 | orm | £ 28,052,474 | |
| 11682 | OronzoMafia | £ 560,700 | |
| 11683 | Orphic Co. | £ 4,423,125 | |
| 11684 | Orquinox Co. | £ 1,119 | |
| 11685 | Orricks IT Services | £ 15,082,611 | |
| 11686 | Ortcaj | £ 77,296,813 | |
| 11687 | Orthanc Inc. | £ 147,448,563 | |
| 11688 | Osaka | £ 5,504,057 | |
| 11689 | Osakin | £ 6,161,131 | |
| 11690 | osca-websites | £ 9,181,996 | |
| 11691 | Oscar Meyer | £ 5,773,809 | |
| 11692 | Oscorp Industries | £ 179,374 | |
| 11693 | Osipolis | £ 16,660,041 | |
| 11694 | Osiris | £ 226,238,733 | |
| 11695 | Osmosis | £ 36,967,752 | |
| 11696 | Osprey Close | £ 53,590,765 | |
| 11697 | Otherones | £ 61,853,286 | |
| 11698 | Others | £ 26,039,960 | |
| 11699 | otherwil | £ 133,717 | |
| 11700 | otherwil2 | £ -34,567,223 | |
