The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16701 | oOoOo | £ 82,717,145 | |
| 16702 | oooooo | £ 5,505,528 | |
| 16703 | OOOoooOOO | £ 614,697 | |
| 16704 | oooPPPooo | £ -53,065 | |
| 16705 | oops | £ 965,477 | |
| 16706 | ooz | £ 320,966,832 | |
| 16707 | Opal Opal | £ 5,502,194 | |
| 16708 | Opec | £ 1,574,677,165 | |
| 16709 | Opel Dire | £ 5,505,993 | |
| 16710 | Open AI | £ 50,000 | |
| 16711 | OpEn FoR BuIsNeSs | £ 5,785,269 | |
| 16712 | Open Goal | £ 2,425,721 | |
| 16713 | Openhammer | £ 38,964,192 | |
| 16714 | Opera House | £ 123,137,933 | |
| 16715 | operating systems | £ 47,761,616 | |
| 16716 | Operation Centerboard | £ 45,661,943 | |
| 16717 | OPERATION SEALION | £ 10,353,786 | |
| 16718 | OPERATION SEALION 2 | £ 5,504,218 | |
| 16719 | Ophthalmology | £ 45,575,639 | |
| 16720 | Opinion | £ 389,953,431 | |
| 16721 | OPiuM | £ 115,856,941 | |
| 16722 | Oppa Gangnam Style | £ 65,242,420 | |
| 16723 | Oppenheim | £ 51,959,450 | |
| 16724 | Oppenheimer | £ 1,424,302 | |
| 16725 | Oppertunity | £ 512,316,834 | |
| 16726 | Opportunities | £ 58,183,350 | |
| 16727 | Opportunity | £ 11,354,079 | |
| 16728 | Opposition | £ 761,831,311 | |
| 16729 | Oppression | £ 416,055,267 | |
| 16730 | OpRedStripe | £ 39,676,062 | |
| 16731 | optics | £ 57,286,889 | |
| 16732 | Optimal Flames | £ 175,592,178 | |
| 16733 | Optimum Nutrition | £ -3,018,246 | |
| 16734 | Optimus Inc. | £ -2,482,292 | |
| 16735 | Options | £ 84,494,650 | |
| 16736 | Options Trading | £ 15,395,474 | |
| 16737 | Opus Dei | £ 1,714,492,650 | |
| 16738 | opus technology | £ 35,372,824 | |
| 16739 | Or Fords | £ 46,903,687 | |
| 16740 | Oracle | £ 5,067,108 | |
| 16741 | Orakos | £ 9,653,572 | |
| 16742 | Orange | £ 24,725,264 | |
| 16743 | Orange Aftershock | £ 67,681,186 | |
| 16744 | Orange Castle | £ 615,362 | |
| 16745 | Orange County | £ 4,910,507 | |
| 16746 | Orange Creatine | £ 6,196,167 | |
| 16747 | Orange Jelly | £ 6,594,926 | |
| 16748 | Orange Jooze | £ 1,261,621 | |
| 16749 | Orange Jooze 3 | £ 50,000 | |
| 16750 | Orange Jooze2 | £ 795,888 | |
| 16751 | Orange Jooze4 | £ 50,000 | |
| 16752 | Orange Jooze5 | £ 50,000 | |
| 16753 | Orange Mango | £ 9,110,398 | |
| 16754 | Orange Paint | £ 97,288,036 | |
| 16755 | Oranginal | £ 4,103,756 | |
| 16756 | oranje | £ 4,966,784 | |
| 16757 | Orbital | £ 54,539,946 | |
| 16758 | Orbital Bombardment | £ 1,279,471,445 | |
| 16759 | Orbital Mechanics | £ 183,085,544 | |
| 16760 | Orbital Oasis | £ 61,220,273 | |
| 16761 | Orchids R Us Ltd | £ 39,331,588 | |
| 16762 | orcs | £ 2,521,634,731 | |
| 16763 | Orcustra | £ 702,800 | |
| 16764 | Order | £ 176,233,665 | |
| 16765 | Order Flow | £ 121,681,973 | |
| 16766 | Orders | £ 27,738,927 | |
| 16767 | Ordinance | £ 12,412,156 | |
| 16768 | ordinary matter | £ 328,937,854 | |
| 16769 | Oregon | £ 111,775,168 | |
| 16770 | OREO | £ 64,657,012 | |
| 16771 | Org | £ 18,286,924 | |
| 16772 | Organic Fruits and Veggy | £ 23,175,728 | |
| 16773 | Organics Ltd | £ 105,054,559 | |
| 16774 | Organised | £ 40,753,602 | |
| 16775 | Organised Crime | £ 17,216,443 | |
| 16776 | Organised.net | £ 55,489,672 | |
| 16777 | Organized Crime | £ 62,808,878 | |
| 16778 | Orgia Co. | £ 4,887,593 | |
| 16779 | Orgy | £ 6,092,194,361 | |
| 16780 | Origin | £ 1,770,336,885 | |
| 16781 | Origin yartley | £ 37,041,694 | |
| 16782 | Original 16 | £ 174,342,608 | |
| 16783 | Original Gangster | £ 120,299,845 | |
| 16784 | Original Sin | £ 144,878,801 | |
| 16785 | Original Taste | £ 47,942,688 | |
| 16786 | Original Thoughts | £ 132,370,975 | |
| 16787 | Originality | £ 2,404,207,968 | |
| 16788 | Origins | £ 63,035,912 | |
| 16789 | Orino | £ 56,346,103 | |
| 16790 | Orion | £ 47,648,728 | |
| 16791 | Orion. | £ 374,172,630 | |
| 16792 | Orleans | £ 66,660,211 | |
| 16793 | orm | £ 2,684,322,281 | |
| 16794 | orming | £ 84,475,985 | |
| 16795 | Ornamental Knights | £ 3,129,157 | |
| 16796 | Ornate | £ -8,047,867 | |
| 16797 | Orome Aldaron | £ 1,531,184,473 | |
| 16798 | OronzoMafia | £ 5,474,161 | |
| 16799 | Orphans Court | £ 297,981,744 | |
| 16800 | Orpheus | £ 288,236,792 | |
