The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 11801 | Originality | £ 1,354,350,681 | |
| 11802 | Origins | £ 63,035,912 | |
| 11803 | Orion | £ 47,648,728 | |
| 11804 | orm | £ 292,460,477 | |
| 11805 | OronzoMafia | £ 560,700 | |
| 11806 | Orphic Co. | £ 4,423,125 | |
| 11807 | Orquinox Co. | £ 1,119 | |
| 11808 | Orricks IT Services | £ 15,082,611 | |
| 11809 | Ortcaj | £ 77,296,813 | |
| 11810 | Orthanc Inc. | £ 147,448,563 | |
| 11811 | Osaka | £ 5,504,057 | |
| 11812 | Osakin | £ 6,161,131 | |
| 11813 | osca-websites | £ 9,181,996 | |
| 11814 | Oscar Meyer | £ 5,773,809 | |
| 11815 | Oscorp Industries | £ 179,374 | |
| 11816 | Osipolis | £ 16,660,041 | |
| 11817 | Osiris | £ 225,126,101 | |
| 11818 | Osmosis | £ 36,967,752 | |
| 11819 | Osprey Close | £ 53,590,765 | |
| 11820 | Otherones | £ 61,853,286 | |
| 11821 | Others | £ 26,039,960 | |
| 11822 | otherwil | £ 133,717 | |
| 11823 | otherwil2 | £ -34,567,223 | |
| 11824 | otherwil3 | £ 1,893,225 | |
| 11825 | otherwil4 | £ 4,826,025 | |
| 11826 | otherwil5 | £ 829,030 | |
| 11827 | Ottawa | £ 44,778,874 | |
| 11828 | Otto | £ 511,521,836 | |
| 11829 | OU812 | £ 226,050,217 | |
| 11830 | Ouija Industries | £ 345,812 | |
| 11831 | our butterfly | £ 1,134,896,288 | |
| 11832 | Our Discontent | £ 5,507,855 | |
| 11833 | Our Dollar | £ 173,827,178 | |
| 11834 | Our Doorstep | £ 1,396,159 | |
| 11835 | Our Golden Years | £ 903,262,932 | |
| 11836 | Our Good Name | £ 573,677,374 | |
| 11837 | Our Happy Memories | £ 34,408,558 | |
| 11838 | our judgement | £ 621,639,331 | |
| 11839 | Our Lives | £ 60,309,789 | |
| 11840 | our Lord | £ 5,790,277 | |
| 11841 | Our Loved Ones | £ 106,677,737 | |
| 11842 | Our Times | £ 1,742,749 | |
| 11843 | Ours | £ 191,746,347 | |
| 11844 | Ourselves | £ 91,484,866 | |
| 11845 | out | £ 85,981,569 | |
| 11846 | Out of Nothing | £ 1,503,708 | |
| 11847 | Out Of The Blue | £ 225,575,681 | |
| 11848 | Out of town | £ 586,926 | |
| 11849 | Out You Go | £ 39,675,860 | |
| 11850 | outbreak | £ 561,418,136 | |
| 11851 | Outer Haven | £ 87,440,720 | |
| 11852 | Outer Heaven | £ 58,665,319 | |
| 11853 | Outlandish Labs LLC | £ 1,478,185 | |
| 11854 | Outlands | £ 153,830,399 | |
| 11855 | Outlaw | £ 4,594,026 | |
| 11856 | Outletsales | £ 1,793,596 | |
| 11857 | Outrageous Fortune | £ 215,856,326 | |
| 11858 | Outsourcing LLC | £ 4,372,708 | |
| 11859 | Outtathisworld plc | £ 1,236,092 | |
| 11860 | Outworld | £ 75,608,832 | |
| 11861 | Ovation | £ 2,547,061 | |
| 11862 | Over Priced | £ 73,067,141 | |
| 11863 | overflowing bog | £ 11,871,021 | |
| 11864 | overHelming | £ 491,414,184 | |
| 11865 | Overmeire | £ 5,506,415 | |
| 11866 | Overpoort | £ 2,764,404 | |
| 11867 | Overpovered | £ 1,092,543 | |
| 11868 | Override | £ 17,139,813 | |
| 11869 | OverThor | £ 5,507,873 | |
| 11870 | Overwatch | £ 215,454,246 | |
| 11871 | Overwatch LTD | £ 57,470,387 | |
| 11872 | ow3n pte ltd | £ 3,307,504 | |
| 11873 | Owens Enterprise | £ 635,861,134 | |
| 11874 | Owls | £ 443,068,386 | |
| 11875 | owned | £ 5,486,100 | |
| 11876 | Owned2EU | £ -76,039,189 | |
| 11877 | Owned3EU | £ 2,813,019 | |
| 11878 | Owned4EU | £ -11,748,456 | |
| 11879 | Owner | £ 6,354,110 | |
| 11880 | Owning This Land | £ -869,747 | |
| 11881 | oWoTYRANNYoWo | £ 229,344,500 | |
| 11882 | OWWWW | £ 5,508,284 | |
| 11883 | Oxcide | £ 12,818,579 | |
| 11884 | Oxford | £ 124,978,983 | |
| 11885 | OXO | £ 556,099,299 | |
| 11886 | Oxy Clean | £ 71,691,928 | |
| 11887 | OXYCODONE | £ 68,924,853 | |
| 11888 | Oxygen | £ 215,261,376 | |
| 11889 | Oz and Goodwin | £ 4,583,012 | |
| 11890 | Ozz | £ 89,779,013 | |
| 11891 | P a p a r a z z i | £ 178,441,792 | |
| 11892 | P.A.F.C | £ 191,432 | |
| 11893 | P1GLTD | £ 19,292 | |
| 11894 | paal met bijen | £ 8,480,544 | |
| 11895 | Pabst | £ 52,512,217 | |
| 11896 | PACE | £ 70,619,715 | |
| 11897 | PACE10000 | £ -134,527 | |
| 11898 | Pacha | £ 136,993,870 | |
| 11899 | Pacific Injustice | £ 88,830,701 | |
| 11900 | PacIndustries | £ 10,669 | |
