The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 5201 | ClaretAndGold | £ 5,503,516 | |
| 5202 | Clarion Ledger | £ 2,067,493 | |
| 5203 | Clarity | £ 2,668,290,320 | |
| 5204 | Clarity Web Solutions | £ 1,480,867 | |
| 5205 | Clark | £ 322,697,643 | |
| 5206 | clarkyCorp | £ 4,826,048 | |
| 5207 | Class | £ 552,439,471 | |
| 5208 | Class A Drugs | £ 6,237,284 | |
| 5209 | Class A Swedge | £ 109,262,865 | |
| 5210 | Class B Associates | £ 77,503,522 | |
| 5211 | Class C LTD | £ 91,308,438 | |
| 5212 | Classified | £ 1,135,932,591 | |
| 5213 | Claustrophobia | £ 202,399,403 | |
| 5214 | Claverhouse | £ 482,534,969 | |
| 5215 | Claw Hammer | £ 171,833,671 | |
| 5216 | Clay | £ 25,588,820 | |
| 5217 | Clayton Nuclear Systems | £ 10,738,836 | |
| 5218 | Clean-Up Crew | £ 48,238,560 | |
| 5219 | Cleaners | £ 422,385,048 | |
| 5220 | cleanupcrew | £ 5,500,009 | |
| 5221 | CLEAR | £ 19,007,952 | |
| 5222 | Clear Creek | £ 212,731,716 | |
| 5223 | clearing wave | £ 4,941,203 | |
| 5224 | ClearSky | £ 45,045,740 | |
| 5225 | ClearWater | £ 50,000 | |
| 5226 | Cleasby co | £ 60,798,869 | |
| 5227 | Cleaving Offshore Ltd | £ 5,506,766 | |
| 5228 | Clem Fandango | £ 3,954,806,755 | |
| 5229 | Clementine | £ 119,480,884 | |
| 5230 | Clemenza | £ 300,858 | |
| 5231 | Cleveland | £ 274,388,319 | |
| 5232 | Cleveland Browns | £ 77,283,548 | |
| 5233 | Clever Names | £ 2,111,897,478 | |
| 5234 | Cleyra | £ 58,482,880 | |
| 5235 | Click | £ 5,502,877 | |
| 5236 | ClickClick | £ 3,938,259 | |
| 5237 | Cliffjumper | £ 189,583,070 | |
| 5238 | Climate | £ 184,200,853 | |
| 5239 | Climate Change | £ 322,888,160 | |
| 5240 | climber | £ 127,185,821 | |
| 5241 | CLIPPERMAN | £ 57,055,407 | |
| 5242 | Clitheroe | £ 415,850,956 | |
| 5243 | Clobber | £ 131,272,819 | |
| 5244 | clobber2 | £ 2,206,865 | |
| 5245 | Clock | £ 5,500,868 | |
| 5246 | Clocks | £ 50,000 | |
| 5247 | Clockwork Nexus | £ 5,751,012 | |
| 5248 | Cloggs | £ 2,840,593,717 | |
| 5249 | Clone Wars Co. | £ 4,237,523 | |
| 5250 | Clones | £ 112,130,494 | |
| 5251 | Closeness | £ 483,867,814 | |
| 5252 | Clothing | £ 3,930,256 | |
| 5253 | Cloud | £ 39,844,708 | |
| 5254 | Cloud Bazaar | £ 50,000 | |
| 5255 | Clouds | £ 74,213,426 | |
| 5256 | cloudyyy | £ 3,872,271 | |
| 5257 | Clove Club | £ 296,641,292 | |
| 5258 | Cloven Hooves | £ 103,118,487 | |
| 5259 | Clowd Inc. | £ 52,949,730 | |
| 5260 | Clown School | £ 5,327,420 | |
| 5261 | Clown Town | £ -2,009,498 | |
| 5262 | Clowns | £ 45,149,976 | |
| 5263 | ClownsRfun | £ 21,446,367 | |
| 5264 | club | £ 515,017,210 | |
| 5265 | Club Boogaloo | £ 532,926 | |
| 5266 | Club inc | £ 388,803 | |
| 5267 | Club Tropicana | £ 142,339,606 | |
| 5268 | Clubs | £ 347,050,674 | |
| 5269 | Cluedo | £ 4,906,330,896 | |
| 5270 | Clunge Enterprises | £ 1,967,611 | |
| 5271 | ClusterFartIndustries | £ 57,324,456 | |
| 5272 | ClusterShartIndustries | £ 54,287,012 | |
| 5273 | ClusterSmookIndustries | £ 57,924,163 | |
| 5274 | ClusterSmuckIndustries | £ 130,305,436 | |
| 5275 | ClusterSmutIndustries | £ 50,288,579 | |
| 5276 | Clyde | £ 281,680,305 | |
| 5277 | CMA | £ 32,179 | |
| 5278 | CMI | £ 66,993 | |
| 5279 | CMStu | £ 187,775 | |
| 5280 | Co-Op | £ 228,747,203 | |
| 5281 | Co-Operative | £ 1,439,413 | |
| 5282 | Co1 | £ 50,000 | |
| 5283 | CO2 | £ 3,507,780,268 | |
| 5284 | CO3 | £ 4,340,673,739 | |
| 5285 | Coach | £ 2,867,948 | |
| 5286 | Coach Purses | £ 69,514,582 | |
| 5287 | Coast toCoast | £ 227,236,801 | |
| 5288 | Coat Hanger | £ 21,523,460 | |
| 5289 | Coating | £ 470,957,791 | |
| 5290 | cob | £ 222,968,805 | |
| 5291 | Cobblers | £ 141,118,977 | |
| 5292 | Cobblewall | £ -821,738 | |
| 5293 | Cobra Dojo | £ 13,639,129 | |
| 5294 | Cobra.inc | £ 5,491,225 | |
| 5295 | Coca Cola | £ 65,429,607 | |
| 5296 | Coca-Cola Company | £ 7,712,659 | |
| 5297 | CocaCola | £ 51,892,040 | |
| 5298 | Cocaine | £ 298,622,868 | |
| 5299 | CocaineCowboys | £ 2,581,891 | |
| 5300 | Cock Blocked | £ 34,941,635 | |
