The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 15301 | Orcustra | £ 702,800 | |
| 15302 | Order | £ 176,233,665 | |
| 15303 | Order Flow | £ 121,681,973 | |
| 15304 | Orders | £ 27,738,927 | |
| 15305 | Ordinance | £ 3,990,781 | |
| 15306 | ordinary matter | £ 285,537,735 | |
| 15307 | Oregon | £ 111,775,168 | |
| 15308 | OREO | £ 64,657,012 | |
| 15309 | Org | £ 18,286,924 | |
| 15310 | Organic Fruits and Veggy | £ 23,175,728 | |
| 15311 | Organics Ltd | £ 105,054,559 | |
| 15312 | Organised Crime | £ 17,216,443 | |
| 15313 | Organised.net | £ 55,489,672 | |
| 15314 | Organized Crime | £ 62,808,878 | |
| 15315 | Orgia Co. | £ 4,887,593 | |
| 15316 | Orgy | £ 6,092,194,361 | |
| 15317 | Origin | £ 1,411,096,740 | |
| 15318 | Origin yartley | £ 37,041,694 | |
| 15319 | Original 16 | £ 174,342,608 | |
| 15320 | Original Gangster | £ 12,934,288 | |
| 15321 | Original Sin | £ 144,878,801 | |
| 15322 | Originality | £ 2,404,207,968 | |
| 15323 | Origins | £ 63,035,912 | |
| 15324 | Orino | £ 56,346,103 | |
| 15325 | Orion | £ 47,648,728 | |
| 15326 | Orion. | £ 374,172,630 | |
| 15327 | Orleans | £ 4,119,565 | |
| 15328 | orm | £ 2,684,322,281 | |
| 15329 | orming | £ 79,012,988 | |
| 15330 | Ornamental Knights | £ 3,129,157 | |
| 15331 | Ornate | £ -8,047,867 | |
| 15332 | Orome Aldaron | £ 1,531,184,473 | |
| 15333 | OronzoMafia | £ 5,474,161 | |
| 15334 | Orphans Court | £ 297,981,744 | |
| 15335 | Orpheus | £ 288,236,792 | |
| 15336 | Orphic Co. | £ 4,423,125 | |
| 15337 | Orquinox Co. | £ 1,119 | |
| 15338 | Orricks IT Services | £ 15,082,611 | |
| 15339 | Ortcaj | £ 77,296,813 | |
| 15340 | Orthanc Inc. | £ 147,448,563 | |
| 15341 | Osaka | £ 5,504,057 | |
| 15342 | Osakin | £ 6,161,131 | |
| 15343 | Osbourne | £ 1,744,973 | |
| 15344 | osca-websites | £ 9,181,996 | |
| 15345 | Oscar Meyer | £ 5,773,809 | |
| 15346 | Oscars Emporium | £ 144,290,998 | |
| 15347 | Oscillation | £ 3,001,978 | |
| 15348 | Oscorp Industries | £ 179,374 | |
| 15349 | OSHA Six Flags | £ 5,346,082 | |
| 15350 | Osipolis | £ 16,660,041 | |
| 15351 | Osiris | £ 225,126,101 | |
| 15352 | osiris666 | £ -1,880,407 | |
| 15353 | osiris6971 | £ 50,840,965 | |
| 15354 | Oslo | £ 9,880,014 | |
| 15355 | Osmosis | £ 41,633,292 | |
| 15356 | Osprey Close | £ 53,590,765 | |
| 15357 | ossiary | £ 18,019,777 | |
| 15358 | other comps | £ 286,021,008 | |
| 15359 | Others | £ 26,039,960 | |
| 15360 | Others sometimes | £ 65,359,099 | |
| 15361 | otherwil | £ 133,717 | |
| 15362 | otherwil2 | £ -34,567,223 | |
| 15363 | otherwil3 | £ 1,893,225 | |
| 15364 | otherwil4 | £ 4,826,025 | |
| 15365 | otherwil5 | £ 829,030 | |
| 15366 | Ottawa | £ 44,778,874 | |
| 15367 | Otter | £ 43,181,655 | |
| 15368 | Ottoman Empire | £ 56,887,049 | |
| 15369 | OU812 | £ 295,697,174 | |
| 15370 | Ouija Industries | £ 345,812 | |
| 15371 | our butterfly | £ 1,134,896,288 | |
| 15372 | our differences | £ 199,154,697 | |
| 15373 | Our Discontent | £ 5,507,855 | |
| 15374 | Our Fathers | £ 1,939,125 | |
| 15375 | Our Golden Years | £ 908,659,300 | |
| 15376 | Our Good Name | £ 571,345,968 | |
| 15377 | Our Happy Memories | £ 34,408,558 | |
| 15378 | our judgement | £ 621,639,331 | |
| 15379 | our lifes | £ 464,291,926 | |
| 15380 | Our Lives | £ 60,309,789 | |
| 15381 | our Lord | £ 5,790,277 | |
| 15382 | our time | £ 36,510,342 | |
| 15383 | Our Times | £ 1,742,749 | |
| 15384 | our universe | £ 611,100,154 | |
| 15385 | Ours | £ 550,574,825 | |
| 15386 | Ourselves | £ 91,484,866 | |
| 15387 | out | £ 85,981,569 | |
| 15388 | out of my face | £ 581,084,624 | |
| 15389 | Out of Nothing | £ 6,356,430 | |
| 15390 | Out Of The Blue | £ 946,989,643 | |
| 15391 | Out You Go | £ 39,675,860 | |
| 15392 | Outer Heaven | £ 58,665,319 | |
| 15393 | Outlandish Labs LLC | £ 1,478,185 | |
| 15394 | Outlaw | £ 10,047,120 | |
| 15395 | Outletsales | £ 1,793,596 | |
| 15396 | outlook responding | £ 47,720,378 | |
| 15397 | Outrageous Fortune | £ 210,155,594 | |
| 15398 | Outsourcing LLC | £ 4,372,708 | |
| 15399 | Outtathisworld plc | £ 1,236,092 | |
| 15400 | Ovation | £ 2,547,061 | |
