The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12901 | orcs | £ 2,521,634,731 | |
| 12902 | Orcustra | £ 702,800 | |
| 12903 | Order | £ 176,233,665 | |
| 12904 | Oregon | £ 111,775,168 | |
| 12905 | OREO | £ 64,657,012 | |
| 12906 | Org | £ 18,286,924 | |
| 12907 | Organic Beaver | £ 48,683,222 | |
| 12908 | Organics Ltd | £ 105,054,559 | |
| 12909 | Organised Crime | £ 17,216,443 | |
| 12910 | Organized Crime | £ 62,808,878 | |
| 12911 | Orgia Co. | £ 4,887,593 | |
| 12912 | Orgy | £ 4,311,652,261 | |
| 12913 | Origin yartley | £ 37,041,694 | |
| 12914 | Original 16 | £ 132,618,089 | |
| 12915 | Original Sin | £ 141,442,446 | |
| 12916 | Originality | £ 1,357,128,017 | |
| 12917 | Origins | £ 63,035,912 | |
| 12918 | Orino | £ 18,804,304 | |
| 12919 | Orion | £ 47,648,728 | |
| 12920 | orm | £ 413,783,803 | |
| 12921 | orming | £ 109,142,927 | |
| 12922 | OronzoMafia | £ 5,474,161 | |
| 12923 | Orphans Court | £ 96,686,622 | |
| 12924 | Orphic Co. | £ 4,423,125 | |
| 12925 | Orquinox Co. | £ 1,119 | |
| 12926 | Orricks IT Services | £ 15,082,611 | |
| 12927 | Ortcaj | £ 77,296,813 | |
| 12928 | Orthanc Inc. | £ 147,448,563 | |
| 12929 | Osaka | £ 5,504,057 | |
| 12930 | Osakin | £ 6,161,131 | |
| 12931 | osca-websites | £ 9,181,996 | |
| 12932 | Oscar Meyer | £ 5,773,809 | |
| 12933 | Oscorp Industries | £ 179,374 | |
| 12934 | OSE | £ 14,487,630 | |
| 12935 | OSHA Six Flags | £ 5,346,082 | |
| 12936 | Osho | £ 4,055,871 | |
| 12937 | Osipolis | £ 16,660,041 | |
| 12938 | Osiris | £ 225,126,101 | |
| 12939 | osiris666 | £ -1,880,407 | |
| 12940 | osiris6971 | £ 10,377,105 | |
| 12941 | Osmosis | £ 36,967,752 | |
| 12942 | Osprey Close | £ 53,590,765 | |
| 12943 | other comps | £ 577,277,580 | |
| 12944 | Other Reality | £ 4,518,202 | |
| 12945 | Otherones | £ 61,853,286 | |
| 12946 | Others | £ 26,039,960 | |
| 12947 | otherwil | £ 133,717 | |
| 12948 | otherwil2 | £ -34,567,223 | |
| 12949 | otherwil3 | £ 1,893,225 | |
| 12950 | otherwil4 | £ 4,826,025 | |
| 12951 | otherwil5 | £ 829,030 | |
| 12952 | Ottawa | £ 44,778,874 | |
| 12953 | Otto | £ 511,521,836 | |
| 12954 | Ottoman Empire | £ 56,887,049 | |
| 12955 | OU812 | £ 295,697,174 | |
| 12956 | OuCh | £ 44,965,481 | |
| 12957 | Ouija Industries | £ 345,812 | |
| 12958 | our butterfly | £ 1,134,896,288 | |
| 12959 | Our Discontent | £ 5,507,855 | |
| 12960 | Our Dollar | £ 173,827,178 | |
| 12961 | Our Doorstep | £ 1,396,159 | |
| 12962 | Our Golden Years | £ 908,659,300 | |
| 12963 | Our Good Name | £ 571,345,968 | |
| 12964 | Our Happy Memories | £ 34,408,558 | |
| 12965 | our judgement | £ 621,639,331 | |
| 12966 | our lifes | £ 415,990,916 | |
| 12967 | Our Lives | £ 60,309,789 | |
| 12968 | our Lord | £ 5,790,277 | |
| 12969 | Our Loved Ones | £ 106,677,737 | |
| 12970 | Our Times | £ 1,742,749 | |
| 12971 | Ours | £ 191,746,347 | |
| 12972 | Ourselves | £ 91,484,866 | |
| 12973 | out | £ 85,981,569 | |
| 12974 | Out of Nothing | £ 1,503,708 | |
| 12975 | Out Of The Blue | £ 946,989,643 | |
| 12976 | Out of town | £ 586,926 | |
| 12977 | Out You Go | £ 39,675,860 | |
| 12978 | outbreak | £ 561,418,136 | |
| 12979 | Outer Heaven | £ 58,665,319 | |
| 12980 | Outlandish Labs LLC | £ 1,478,185 | |
| 12981 | Outlands | £ 157,090,767 | |
| 12982 | Outlaw | £ 10,047,120 | |
| 12983 | Outletsales | £ 1,793,596 | |
| 12984 | Outrageous Fortune | £ 210,155,594 | |
| 12985 | Outsourcing LLC | £ 4,372,708 | |
| 12986 | Outtathisworld plc | £ 1,236,092 | |
| 12987 | Outworld | £ 129,126,601 | |
| 12988 | Ovation | £ 2,547,061 | |
| 12989 | Over A Pub | £ 97,048,135 | |
| 12990 | Over Priced | £ 73,067,141 | |
| 12991 | overflowing bog | £ 11,871,021 | |
| 12992 | overHelming | £ 491,414,184 | |
| 12993 | Overmeire | £ 5,506,415 | |
| 12994 | Overpoort | £ 2,764,404 | |
| 12995 | Overpovered | £ 1,092,543 | |
| 12996 | Override | £ 17,139,813 | |
| 12997 | OverThor | £ 5,507,873 | |
| 12998 | Overwatch | £ 215,454,246 | |
| 12999 | Overwatch LTD | £ 57,470,387 | |
| 13000 | Ovine Flu | £ 232,674,259 | |
