The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 5301 | CSIS | £ 1,570,619 | |
| 5302 | CST Photography | £ 50,464,511 | |
| 5303 | CSTPhotography 6 | £ 20,376,078 | |
| 5304 | CSTPhotography 7 | £ 22,129,189 | |
| 5305 | CSTPhotography 8 | £ 21,863,841 | |
| 5306 | CSTPhotography2 | £ 30,989,552 | |
| 5307 | CSTPhotography3 | £ 26,100,838 | |
| 5308 | CSTPhotography4 | £ 36,737,311 | |
| 5309 | CSTPhotography5 | £ 31,737,697 | |
| 5310 | Cthulhu | £ 65,626,904 | |
| 5311 | Cthulhu Corp | £ 5,503,404 | |
| 5312 | Cthulhu Sleeps | £ 1,035,686,271 | |
| 5313 | CTI | £ 4,783,705 | |
| 5314 | CTO MAD MAN | £ 5,501,385 | |
| 5315 | CTowers | £ 36,443,393 | |
| 5316 | ctrl a | £ 1,011,979 | |
| 5317 | Ctrl Alt Del | £ 33,994,377 | |
| 5318 | ctrl alt delete | £ 372,463 | |
| 5319 | ctrl c | £ 562,118 | |
| 5320 | CTU | £ 3,183,621 | |
| 5321 | Cuba | £ 46,040,107 | |
| 5322 | Cuban Rum | £ 27,147,126 | |
| 5323 | Cube | £ 11,923,402 | |
| 5324 | Cube Inc. | £ 5,507,410 | |
| 5325 | cuberdons | £ 8,923,048 | |
| 5326 | Cubic Works | £ 7,695,062 | |
| 5327 | Cubicstan | £ 3,037,220 | |
| 5328 | Cuckoo Ltd | £ 4,991,067 | |
| 5329 | Cucumber | £ 2,015,046,897 | |
| 5330 | Cufin | £ 4,931,482 | |
| 5331 | Cullins | £ 589,733,633 | |
| 5332 | Culliver City | £ 19,474,104 | |
| 5333 | Culo | £ 54,280,976 | |
| 5334 | cult and co | £ 23,957,017 | |
| 5335 | Cult of Morty Morty | £ 8,180,853 | |
| 5336 | cultural appropriation | £ 980,614,979 | |
| 5337 | Cultural Decline | £ 5,507,165 | |
| 5338 | Cultural Expressions | £ 167,279,109 | |
| 5339 | Cumann Luthchleas Gael | £ 5,502,913 | |
| 5340 | Cuneo | £ 57,638,840 | |
| 5341 | Cunnys Trading Company | £ 982,076 | |
| 5342 | Cup | £ 19,851,641 | |
| 5343 | Cupid Stunts PLC | £ 276,395,414 | |
| 5344 | Cups | £ 65,928,983 | |
| 5345 | Curiosity | £ 525,748,615 | |
| 5346 | Currents | £ 48,241,725 | |
| 5347 | Curry-clanRob | £ 5,507,441 | |
| 5348 | curtains | £ 365,303,983 | |
| 5349 | Curve | £ 1,327,620 | |
| 5350 | Curz Corp | £ 50,000 | |
| 5351 | Cusco | £ 244,469,734 | |
| 5352 | Cushion | £ 40,606,248 | |
| 5353 | Cushty Son | £ 0 | |
| 5354 | Custard | £ 57,094,161 | |
| 5355 | Custard Pie | £ 668,701,487 | |
| 5356 | Custom Cream Pies | £ 13,426,401 | |
| 5357 | Cut | £ 192,062,776 | |
| 5358 | Cut Resistant Glove | £ 122,479,897 | |
| 5359 | Cute Boys Dx | £ 5,861,264 | |
| 5360 | Cute Red Industries | £ 61,322,810 | |
| 5361 | Cuthberts Coachworks | £ 596,602,678 | |
| 5362 | cutter | £ 37,900,521 | |
| 5363 | Cutting Down Trees | £ 55,370,240 | |
| 5364 | Cutty Sark | £ 576,310,144 | |
| 5365 | cvc | £ 5,541,924 | |
| 5366 | CYAfergie | £ 6,790,092 | |
| 5367 | Cyanide | £ 93,319,153 | |
| 5368 | Cyber Death | £ 125,400,697 | |
| 5369 | Cyber Sharks | £ 82,973,600 | |
| 5370 | Cyber Tech | £ 3,349,487 | |
| 5371 | Cyber Tech Systems | £ 38,765,108 | |
| 5372 | Cyber-Tec | £ 14,226,661 | |
| 5373 | Cybercrime Specialists | £ 273,813,564 | |
| 5374 | cybercrimedetionunit | £ 1,429,198 | |
| 5375 | CyberDeath | £ 100,751,231 | |
| 5376 | CyberDefense Co | £ 39,610,390 | |
| 5377 | Cyberdogs | £ 100,831,693 | |
| 5378 | Cyberdyne | £ 178,339,643 | |
| 5379 | Cyberdyne Corp. | £ 4,285,808 | |
| 5380 | Cyberdyne Systems | £ 39,432,287 | |
| 5381 | Cyberdyne Sytems | £ -1,386,763 | |
| 5382 | CyberLife | £ 1,417,404 | |
| 5383 | Cybernet | £ 50,000 | |
| 5384 | Cyberspace Operations | £ 6,707,056 | |
| 5385 | Cyberterrorism | £ 653,442,761 | |
| 5386 | Cyborg | £ 102,781,192 | |
| 5387 | Cyborgia Inc | £ 11,103,436 | |
| 5388 | cycle | £ 123,247,905 | |
| 5389 | Cycletour | £ 5,504,207 | |
| 5390 | Cyclists | £ 115,901,726 | |
| 5391 | Cyclists are rubbish | £ 50,000 | |
| 5392 | Cyclone | £ 12,449,375 | |
| 5393 | Cyclonic energy | £ 53,352,325 | |
| 5394 | Cydonia | £ 4,972,116 | |
| 5395 | Cydonia Ltd | £ 135,066,044 | |
| 5396 | CYKA | £ 56,980,649 | |
| 5397 | CykaBlyat | £ 5,365,780 | |
| 5398 | Cylon | £ 79,057,234 | |
| 5399 | Cylons | £ 52,605,207 | |
| 5400 | Cymraeg | £ 16,291,695 | |
