The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16301 | Oasis | £ 107,322,768 | |
| 16302 | Oasis of the Seas | £ 216,020,159 | |
| 16303 | Oats | £ 66,324,070 | |
| 16304 | OB2 | £ 12,755,887 | |
| 16305 | OB3 | £ 14,269,280 | |
| 16306 | OB4 | £ 15,665,305 | |
| 16307 | OB5 | £ 9,012,088 | |
| 16308 | Obama | £ 19,221,901 | |
| 16309 | Obar Ardair | £ 387,490,277 | |
| 16310 | Obble | £ 466,184,526 | |
| 16311 | obedience | £ 477,712,892 | |
| 16312 | Obese American | £ 161,429,557 | |
| 16313 | Obi-Wan Kenobi | £ 1,614,845,855 | |
| 16314 | Obi-Wan-Kenobi | £ 100,953,209 | |
| 16315 | Object in Motion | £ 106,865,438 | |
| 16316 | Objective Reality | £ 5,693,910 | |
| 16317 | Obliteration | £ 362,921,409 | |
| 16318 | Obliteration Is Coming | £ 13,652,041 | |
| 16319 | Obliterator | £ 5,501,753 | |
| 16320 | Oblivion | £ 75,985,020 | |
| 16321 | Oblivious | £ 5,503,920 | |
| 16322 | Oblock | £ 30,442,233 | |
| 16323 | Obsession | £ 4,141,059 | |
| 16324 | Obsidian | £ 4,270,442 | |
| 16325 | Obsidian Destroyer | £ 5,567,314 | |
| 16326 | Obsolete | £ 55,457,606 | |
| 16327 | Obtuse | £ 14,379,095 | |
| 16328 | ObusPrimeLLC | £ 50,000 | |
| 16329 | Obviously | £ 2,318,576,665 | |
| 16330 | Ocarina of Time | £ -1,574,201 | |
| 16331 | OCB inc | £ 6,320,804 | |
| 16332 | Occasional Tables | £ 5,328,203 | |
| 16333 | Ocean | £ 52,827,866 | |
| 16334 | Ocean Beach Club | £ 1,185,793,962 | |
| 16335 | Ocean Defence | £ 418,570,467 | |
| 16336 | ocean star | £ 3,580,849,318 | |
| 16337 | Oceanic Enterprises | £ -50,808 | |
| 16338 | Oceans 11 | £ 58,500,636 | |
| 16339 | Oceans 12 | £ 10,291,638 | |
| 16340 | Oceans 13 | £ 132,219,759 | |
| 16341 | Oceans Eleven | £ 8,485,684 | |
| 16342 | Ocelot | £ 194,460,230 | |
| 16343 | Och Noooo | £ 1,506,119 | |
| 16344 | Octavian | £ 4,631,188 | |
| 16345 | October 1066 | £ 81,732,927 | |
| 16346 | October 1854 | £ 290,795,624 | |
| 16347 | October 2014 | £ 94,385,046 | |
| 16348 | Octopia | £ 9,626,521 | |
| 16349 | Octopus Garden | £ 4,050,927 | |
| 16350 | Odd Things | £ 3,937,864 | |
| 16351 | Oddjob | £ 16,604,273 | |
| 16352 | Odds and ends | £ 133,284,817 | |
| 16353 | Odds on Favorite | £ 74,346,727 | |
| 16354 | Oddysay | £ 2,896,867 | |
| 16355 | Odell | £ 13,714,064 | |
| 16356 | Oden | £ 641,394,649 | |
| 16357 | oden wrath | £ 1,735,842,850 | |
| 16358 | odin | £ 8,811,968 | |
| 16359 | Odin Mafia | £ 8,768,668 | |
| 16360 | Odin the Wanderer | £ 4,687,105 | |
| 16361 | Odo | £ 32,513,900 | |
| 16362 | Odqan | £ 186,512,804 | |
| 16363 | Odyssey | £ 334,944,633 | |
| 16364 | of a black widow | £ 196,069,515 | |
| 16365 | Of a Brutal Empire | £ 36,359,377 | |
| 16366 | of a Solar Empire | £ 46,660,163 | |
| 16367 | Of A Time | £ 27,824,181 | |
| 16368 | Of All Your Land | £ 48,121,892 | |
| 16369 | of Belfast | £ 53,629,741 | |
| 16370 | Of Bomb | £ 5,131,350 | |
| 16371 | of CFC | £ 5,455,120 | |
| 16372 | Of Every Position | £ 61,887,884 | |
| 16373 | Of Friday the 13th | £ 50,000 | |
| 16374 | of Impendium | £ 349,441 | |
| 16375 | of Long Stockings | £ 16,738,335 | |
| 16376 | Of My Label | £ 367,377,610 | |
| 16377 | of my secrets | £ 258,609,678 | |
| 16378 | of of | £ 7,075,463 | |
| 16379 | of of of of of of of of | £ 50,000 | |
| 16380 | of REASON | £ 1,154,429 | |
| 16381 | of RHC | £ 68,042,901 | |
| 16382 | Of Scotland | £ 1,304,795,018 | |
| 16383 | Of The Boards | £ 14,794,127 | |
| 16384 | of the devil | £ 27,539,344 | |
| 16385 | of The Hat | £ 5,507,097 | |
| 16386 | of the heap | £ 66,771,581 | |
| 16387 | of the lost | £ 69,257,675 | |
| 16388 | of the monsters | £ 41,126,098 | |
| 16389 | Of The Road | £ 146,979,140 | |
| 16390 | of the runite | £ 4,694,589 | |
| 16391 | Of The UVF | £ 133,321,393 | |
| 16392 | Of the world | £ 2,007,785 | |
| 16393 | of. | £ 335,457,109 | |
| 16394 | Ofcom | £ 306,858,410 | |
| 16395 | Off | £ 29,402,450 | |
| 16396 | Off His Trolly | £ 10,806,044 | |
| 16397 | off it | £ 5,261,275 | |
| 16398 | Offenbach | £ 382,674,581 | |
| 16399 | Offender | £ 105,923,423 | |
| 16400 | Offensive Behaviour | £ 509,861,247 | |
