The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 15101 | Original Sin | £ 144,878,801 | |
| 15102 | Original Taste | £ 1,942,688 | |
| 15103 | Original Thoughts | £ 103,618,655 | |
| 15104 | Originality | £ 2,404,207,968 | |
| 15105 | Origins | £ 63,035,912 | |
| 15106 | Orino | £ 56,346,103 | |
| 15107 | Orion | £ 47,648,728 | |
| 15108 | Orion. | £ 374,172,630 | |
| 15109 | Orleans | £ 1,117,932 | |
| 15110 | orm | £ 2,684,322,281 | |
| 15111 | orming | £ 84,475,985 | |
| 15112 | Orome Aldaron | £ 1,531,184,473 | |
| 15113 | OronzoMafia | £ 5,474,161 | |
| 15114 | Orphans Court | £ 297,981,744 | |
| 15115 | Orpheus | £ 288,236,792 | |
| 15116 | Orphic Co. | £ 4,423,125 | |
| 15117 | Orricks IT Services | £ 15,082,611 | |
| 15118 | Ortcaj | £ 77,296,813 | |
| 15119 | Orthanc Inc. | £ 147,448,563 | |
| 15120 | Osaka | £ 5,504,057 | |
| 15121 | Osakin | £ 6,161,131 | |
| 15122 | Osbourne | £ 1,744,973 | |
| 15123 | osca-websites | £ 9,181,996 | |
| 15124 | Oscar Meyer | £ 5,773,809 | |
| 15125 | Oscars Emporium | £ 148,690,217 | |
| 15126 | Oscillation | £ 3,001,978 | |
| 15127 | OSHA Six Flags | £ 5,346,082 | |
| 15128 | Osipolis | £ 16,660,041 | |
| 15129 | Osiris | £ 225,126,101 | |
| 15130 | osiris6971 | £ 50,840,965 | |
| 15131 | Oslo | £ 9,880,014 | |
| 15132 | Osmosis | £ 41,633,292 | |
| 15133 | Osprey Close | £ 53,590,765 | |
| 15134 | Othello | £ 79,511,406 | |
| 15135 | other comps | £ 286,021,008 | |
| 15136 | Other People | £ 12,169,340 | |
| 15137 | Others | £ 26,039,960 | |
| 15138 | Others sometimes | £ 65,359,099 | |
| 15139 | otherwil3 | £ 1,893,225 | |
| 15140 | otherwil4 | £ 4,826,025 | |
| 15141 | otherwil5 | £ 829,030 | |
| 15142 | Ottawa | £ 44,778,874 | |
| 15143 | Ottoman Empire | £ 56,887,049 | |
| 15144 | OU812 | £ 295,697,174 | |
| 15145 | our butterfly | £ 1,134,896,288 | |
| 15146 | Our Champion | £ 65,388,530 | |
| 15147 | our differences | £ 302,439,939 | |
| 15148 | Our Discontent | £ 5,507,855 | |
| 15149 | Our Fathers | £ 116,143,694 | |
| 15150 | Our Golden Years | £ 908,659,300 | |
| 15151 | Our Good Name | £ 571,345,968 | |
| 15152 | Our Happy Memories | £ 34,408,558 | |
| 15153 | our judgement | £ 621,639,331 | |
| 15154 | Our Lives | £ 60,309,789 | |
| 15155 | Our Times | £ 1,742,749 | |
| 15156 | our universe | £ 611,100,154 | |
| 15157 | our ways | £ 67,823,080 | |
| 15158 | Ours | £ 1,053,657,782 | |
| 15159 | Ourselves | £ 91,484,866 | |
| 15160 | out | £ 85,981,569 | |
| 15161 | Out For Justice | £ 1,000,000 | |
| 15162 | out of my face | £ 581,084,624 | |
| 15163 | Out of Nothing | £ 6,356,430 | |
| 15164 | Out Of The Blue | £ 946,989,643 | |
| 15165 | Outdoor Boys | £ 23,962,595 | |
| 15166 | Outer Heaven | £ 58,665,319 | |
| 15167 | Outlandish Labs LLC | £ 1,478,185 | |
| 15168 | Outletsales | £ 1,793,596 | |
| 15169 | outlook responding | £ 428,357,399 | |
| 15170 | Outrageous Fortune | £ 210,155,594 | |
| 15171 | Outside Space | £ 6,959,307 | |
| 15172 | Outside the square | £ 202,329,406 | |
| 15173 | Outsourcing LLC | £ 4,372,708 | |
| 15174 | Outtathisworld plc | £ 1,236,092 | |
| 15175 | Ovation | £ 2,547,061 | |
| 15176 | over educated idiots | £ 140,462,812 | |
| 15177 | Over grown bush | £ 159,812,779 | |
| 15178 | Over Priced | £ 73,067,141 | |
| 15179 | Overclocked RAM | £ 51,978,581 | |
| 15180 | Overdrive | £ 104,717,990 | |
| 15181 | overHelming | £ 491,414,184 | |
| 15182 | Overkil | £ 1,000,000 | |
| 15183 | Overmeire | £ 5,506,415 | |
| 15184 | Overpaid Footballers | £ 8,935,971 | |
| 15185 | Overpoort | £ 2,764,404 | |
| 15186 | Override | £ 17,139,813 | |
| 15187 | Oversoul | £ 19,345,338 | |
| 15188 | overthinking | £ 10,529,502 | |
| 15189 | OverThor | £ 5,507,873 | |
| 15190 | Overwatch | £ 215,454,246 | |
| 15191 | Overwatch LTD | £ 57,470,387 | |
| 15192 | Overwhelming | £ 60,498,024 | |
| 15193 | Ovine Flu | £ 61,245,519 | |
| 15194 | ow3n pte ltd | £ 3,307,504 | |
| 15195 | Owens Enterprise | £ 1,656,510,388 | |
| 15196 | Owl | £ 237,452,023 | |
| 15197 | Owls | £ 425,596,680 | |
| 15198 | owned | £ 5,486,100 | |
| 15199 | Owned3EU | £ 2,813,019 | |
| 15200 | Owner | £ 6,354,110 | |
