The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 4301 | City Wok | £ 118,359 | |
| 4302 | City Wok12 | £ 149,851,702 | |
| 4303 | cityoffspring | £ 22,903,783 | |
| 4304 | CitySuper | £ 141,731,850 | |
| 4305 | CiviIization | £ 813,053,096 | |
| 4306 | Civil Protector | £ 6,430,641 | |
| 4307 | Civilisation | £ 253,003,716 | |
| 4308 | Civilization | £ 9,053,657 | |
| 4309 | claim.co | £ 153,066,098 | |
| 4310 | Clairvoyance | £ 222,707,023 | |
| 4311 | clam burger | £ -2,190,512 | |
| 4312 | clammys | £ 31,010 | |
| 4313 | Clandestine Ops | £ 9,642,983 | |
| 4314 | Clans | £ 322,847,271 | |
| 4315 | Clans of Scotland | £ 491,180,760 | |
| 4316 | Clarences Millions | £ 135,441,193 | |
| 4317 | ClaretAndGold | £ 5,503,516 | |
| 4318 | Clarion Ledger | £ 2,067,493 | |
| 4319 | Clarity | £ 4,120,405,105 | |
| 4320 | Clarity Web Solutions | £ 1,480,867 | |
| 4321 | clarkyCorp | £ 4,826,048 | |
| 4322 | Class | £ 552,455,421 | |
| 4323 | Class A Drugs | £ 6,237,284 | |
| 4324 | Class A Swedge | £ 109,262,865 | |
| 4325 | Class B Associates | £ 77,503,522 | |
| 4326 | Class C LTD | £ 91,308,438 | |
| 4327 | Classified | £ 817,100,376 | |
| 4328 | Claustrophobia | £ 228,035,255 | |
| 4329 | Claverhouse | £ 482,534,969 | |
| 4330 | Claw Hammer | £ 171,833,671 | |
| 4331 | Clay | £ 25,588,820 | |
| 4332 | Clayton Nuclear Systems | £ 10,738,836 | |
| 4333 | Clean-Up Crew | £ 48,238,560 | |
| 4334 | Cleaners | £ 422,385,048 | |
| 4335 | Cleanup Crew Inc | £ 12,010,478 | |
| 4336 | cleanupcrew | £ 5,500,009 | |
| 4337 | CLEAR | £ 19,007,952 | |
| 4338 | Clear Creek | £ 103,730,668 | |
| 4339 | clearing wave | £ 4,941,203 | |
| 4340 | ClearWater | £ 50,000 | |
| 4341 | Clearwater Asylum | £ 58,690,074 | |
| 4342 | Cleasby co | £ 60,798,869 | |
| 4343 | Cleaving Offshore Ltd | £ 5,506,766 | |
| 4344 | Clementine | £ 119,480,884 | |
| 4345 | Clemenza | £ 300,858 | |
| 4346 | Cleveland | £ 274,388,319 | |
| 4347 | Cleveland Browns | £ 77,283,548 | |
| 4348 | Clever Names | £ 2,111,897,478 | |
| 4349 | Cleyra | £ 58,482,880 | |
| 4350 | Click | £ 5,502,877 | |
| 4351 | ClickClick | £ 3,938,259 | |
| 4352 | Cliffjumper | £ 189,583,070 | |
| 4353 | Climate | £ 160,920,112 | |
| 4354 | Climate Change | £ 322,888,160 | |
| 4355 | climber | £ 127,185,821 | |
| 4356 | CLIPPERMAN | £ 54,163,698 | |
| 4357 | Clitheroe | £ 415,850,956 | |
| 4358 | Clobber | £ 128,106,651 | |
| 4359 | Clock | £ 5,500,868 | |
| 4360 | Clocks | £ 50,000 | |
| 4361 | Clockwork | £ 52,010,449 | |
| 4362 | Cloggs | £ 1,972,866,816 | |
| 4363 | Clones | £ 112,130,494 | |
| 4364 | Closeness | £ 483,867,814 | |
| 4365 | Clothing | £ 3,930,256 | |
| 4366 | Cloud | £ 39,844,708 | |
| 4367 | cloud9 | £ -123,897 | |
| 4368 | Clouds | £ 74,213,426 | |
| 4369 | cloudyyy | £ 3,872,271 | |
| 4370 | Clove Club | £ 296,641,292 | |
| 4371 | Clowd Inc. | £ 52,949,730 | |
| 4372 | CLOWN | £ 753,363 | |
| 4373 | Clown School | £ 5,327,420 | |
| 4374 | Clown Town | £ -2,009,498 | |
| 4375 | Clowns | £ 45,149,976 | |
| 4376 | ClownsRfun | £ 21,446,367 | |
| 4377 | club | £ 515,337,407 | |
| 4378 | Club inc | £ 388,803 | |
| 4379 | Club Music | £ 36,478,492 | |
| 4380 | Clubs | £ 134,994 | |
| 4381 | Cluedo | £ 2,175,629,678 | |
| 4382 | Clyde | £ 5,502,200 | |
| 4383 | Clyde Ventures | £ 65,091,418 | |
| 4384 | CMA | £ 32,179 | |
| 4385 | CMI | £ 66,993 | |
| 4386 | CMStu | £ 187,775 | |
| 4387 | Cnut | £ 3,883,001 | |
| 4388 | Co-Op | £ 109,470,329 | |
| 4389 | Co1 | £ 50,000 | |
| 4390 | CO2 | £ 215,534,720 | |
| 4391 | CO3 | £ 250,276,532 | |
| 4392 | Coach Purses | £ 69,514,582 | |
| 4393 | Coast toCoast | £ 227,236,801 | |
| 4394 | Coat Hanger | £ 18,720,268 | |
| 4395 | Coating | £ 470,957,791 | |
| 4396 | cob | £ 222,968,805 | |
| 4397 | Cobblers | £ 141,118,977 | |
| 4398 | Cobblewall | £ -821,738 | |
| 4399 | Cobra Dojo | £ 13,639,129 | |
| 4400 | Cobra Kai | £ 88,373 | |
