The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12201 | Obble | £ 466,184,526 | |
| 12202 | obedience | £ 3,607,615 | |
| 12203 | Obese American | £ 161,429,557 | |
| 12204 | Obi-Wan-Kenobi | £ 100,953,209 | |
| 12205 | Object in Motion | £ 106,865,438 | |
| 12206 | Obliterator | £ 5,501,753 | |
| 12207 | Oblivion | £ 75,985,020 | |
| 12208 | Obsolete | £ 55,457,606 | |
| 12209 | Obtuse | £ 14,379,095 | |
| 12210 | Obviously | £ 2,318,576,665 | |
| 12211 | OCB inc | £ 6,320,804 | |
| 12212 | Occasional Tables | £ 5,328,203 | |
| 12213 | Ocean | £ 52,827,866 | |
| 12214 | ocean star | £ 3,580,849,318 | |
| 12215 | Oceanic Enterprises | £ -50,808 | |
| 12216 | Oceans 11 | £ 58,500,636 | |
| 12217 | Oceans 12 | £ 10,291,638 | |
| 12218 | Oceans 13 | £ 132,219,759 | |
| 12219 | Oceans Eleven | £ 8,485,684 | |
| 12220 | Ocelot | £ 194,460,230 | |
| 12221 | Och Noooo | £ 1,506,119 | |
| 12222 | Octavian | £ 4,631,188 | |
| 12223 | October 2014 | £ 94,385,046 | |
| 12224 | Octopia | £ 9,626,521 | |
| 12225 | Octopus Garden | £ 4,050,927 | |
| 12226 | Oddjob | £ 16,604,273 | |
| 12227 | Odds on Favorite | £ 74,346,727 | |
| 12228 | Oddysay | £ 2,896,867 | |
| 12229 | Odell | £ 13,714,064 | |
| 12230 | Oden | £ 641,394,649 | |
| 12231 | oden wrath | £ 1,221,673,218 | |
| 12232 | odin | £ 8,811,968 | |
| 12233 | Odin Mafia | £ 8,768,668 | |
| 12234 | Odin the Wanderer | £ 4,687,105 | |
| 12235 | Odo | £ 32,513,900 | |
| 12236 | Odqan | £ 292,444,709 | |
| 12237 | Odyssey | £ 329,493,997 | |
| 12238 | of a black widow | £ 196,069,515 | |
| 12239 | Of a Brutal Empire | £ 36,359,377 | |
| 12240 | of a Solar Empire | £ 46,660,163 | |
| 12241 | Of All Your Land | £ 48,121,892 | |
| 12242 | Of Bomb | £ 5,131,350 | |
| 12243 | of CFC | £ 5,455,120 | |
| 12244 | of Elm Street | £ 49,875 | |
| 12245 | Of Every Position | £ 61,887,884 | |
| 12246 | Of Friday the 13th | £ 50,000 | |
| 12247 | Of Green Bay | £ 7,216,016 | |
| 12248 | of Impendium | £ 349,441 | |
| 12249 | of Long Stockings | £ 16,738,335 | |
| 12250 | Of Minisotta | £ 1,716,607 | |
| 12251 | Of My Label | £ 241,830,978 | |
| 12252 | of of | £ 7,075,463 | |
| 12253 | of of of | £ 4,201,365 | |
| 12254 | of REASON | £ 1,154,429 | |
| 12255 | of RHC | £ 68,042,901 | |
| 12256 | Of Scotland | £ 1,304,795,018 | |
| 12257 | of the devil | £ 27,539,344 | |
| 12258 | of The Hat | £ 5,507,097 | |
| 12259 | of the heap | £ 66,771,581 | |
| 12260 | of the lost | £ 69,257,675 | |
| 12261 | of the monsters | £ 41,126,098 | |
| 12262 | Of The Road | £ 146,979,140 | |
| 12263 | of the runite | £ 4,694,589 | |
| 12264 | Of The UVF | £ 133,321,393 | |
| 12265 | Of the world | £ 2,007,785 | |
| 12266 | Of Time | £ 372,360,923 | |
| 12267 | of. | £ 335,457,109 | |
| 12268 | Ofcom | £ 295,858,780 | |
| 12269 | Off | £ 25,794,080 | |
| 12270 | off it | £ 5,261,275 | |
| 12271 | Offenbach | £ 382,674,581 | |
| 12272 | Offensive Behaviour | £ 492,427,300 | |
| 12273 | office | £ 754,667,738 | |
| 12274 | Offroad Trucker | £ 289,809,909 | |
| 12275 | Offshore | £ 367,643,133 | |
| 12276 | Offshore Accounts | £ 140,823,548 | |
| 12277 | Offshore Cash | £ 60,279,702 | |
| 12278 | og esaelP | £ 4,208,484 | |
| 12279 | ogkush | £ 2,491,394 | |
| 12280 | Ogrimmar | £ 35,379,515 | |
| 12281 | Oh Herro | £ 2,995,837 | |
| 12282 | Oh Jesus Christ | £ 9,142,153 | |
| 12283 | Oh No | £ 153,414,766 | |
| 12284 | Oh YEAH | £ 2,549,726 | |
| 12285 | ohara inc | £ -165,571 | |
| 12286 | ohe herrow | £ 5,703,509 | |
| 12287 | Ohnoitsmymothernlaw | £ 5,504,562 | |
| 12288 | Ohtaku inc | £ 3,600,029 | |
| 12289 | Ohtaku inc1 | £ 4,456,703 | |
| 12290 | Ohtaku inc2 | £ 1,267,353 | |
| 12291 | Ohtaku inc3 | £ 4,191,984 | |
| 12292 | Ohtaku inc4 | £ 4,118,968 | |
| 12293 | ohyesyesh | £ 50,000 | |
| 12294 | Oil | £ 833,968,470 | |
| 12295 | Oil CONGLOMO | £ 2,646,845 | |
| 12296 | Oil Field | £ 271,568 | |
| 12297 | Oil Inc | £ 1,596,655 | |
| 12298 | Oil Industry | £ 4,441,721 | |
| 12299 | Oil Rigger | £ 2,151,587,047 | |
| 12300 | Oilfield Industries | £ 9,854,297 | |
