The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 6001 | CSTPhotography 8 | £ 21,863,841 | |
| 6002 | CSTPhotography2 | £ 30,989,552 | |
| 6003 | CSTPhotography3 | £ 26,100,838 | |
| 6004 | CSTPhotography4 | £ 36,737,311 | |
| 6005 | CSTPhotography5 | £ 31,737,697 | |
| 6006 | Cthulhu | £ 65,626,904 | |
| 6007 | Cthulhu Corp | £ 10,289,332 | |
| 6008 | Cthulhu Sleeps | £ 1,035,686,271 | |
| 6009 | CTI | £ 4,783,705 | |
| 6010 | CTowers | £ 36,443,393 | |
| 6011 | ctrl a | £ 1,011,979 | |
| 6012 | Ctrl Alt Del | £ 120,753,569 | |
| 6013 | ctrl alt delete | £ 372,463 | |
| 6014 | ctrl c | £ 562,118 | |
| 6015 | CTU | £ 3,183,621 | |
| 6016 | CU46 | £ 5,504,264 | |
| 6017 | Cuba | £ 46,040,107 | |
| 6018 | Cuba Cuba | £ 26,332,756 | |
| 6019 | Cuban Rum | £ 27,147,126 | |
| 6020 | Cube Inc. | £ 5,507,410 | |
| 6021 | cuberdons | £ 8,923,048 | |
| 6022 | Cubic Works | £ 7,695,062 | |
| 6023 | Cubicstan | £ 3,037,220 | |
| 6024 | Cuckoo Ltd | £ 4,991,067 | |
| 6025 | Cucks | £ 33,351,627 | |
| 6026 | Cucumber | £ 2,015,046,897 | |
| 6027 | Cufin | £ 4,931,482 | |
| 6028 | cujo | £ 52,583,663 | |
| 6029 | Cullins | £ 589,733,633 | |
| 6030 | Culliver City | £ 19,474,104 | |
| 6031 | Culo | £ 54,280,976 | |
| 6032 | cult and co | £ 23,957,017 | |
| 6033 | Cult of the Dead | £ 1,014,326,939 | |
| 6034 | cultural appropriation | £ 1,276,748,231 | |
| 6035 | Cultural Decline | £ 21,864,506 | |
| 6036 | Cultural Expressions | £ 167,279,109 | |
| 6037 | Cumann Luthchleas Gael | £ 5,502,913 | |
| 6038 | Cuneo | £ 57,638,840 | |
| 6039 | cunning | £ 70,479,611 | |
| 6040 | Cunnys Trading Company | £ 982,076 | |
| 6041 | Cup | £ 19,851,641 | |
| 6042 | Cupid Stunts PLC | £ 360,253,156 | |
| 6043 | Cups | £ 65,928,983 | |
| 6044 | Curiosity | £ 601,947,939 | |
| 6045 | Currents | £ 48,241,725 | |
| 6046 | Curry-clanRob | £ 5,507,441 | |
| 6047 | Curse of Monkey Island | £ 40,136,823 | |
| 6048 | curtains | £ 365,303,983 | |
| 6049 | Curve | £ 1,327,620 | |
| 6050 | Curz Corp | £ 50,000 | |
| 6051 | Cusco | £ 227,019,187 | |
| 6052 | Cushion | £ 40,606,248 | |
| 6053 | Cushions | £ 52,838,661 | |
| 6054 | Cushty Son | £ 0 | |
| 6055 | Custard | £ 57,094,161 | |
| 6056 | Custard Pie | £ 668,701,487 | |
| 6057 | Custom Cream Pies | £ 34,960,995 | |
| 6058 | Cut | £ 192,062,776 | |
| 6059 | Cut Resistant Glove | £ 108,609,399 | |
| 6060 | Cute Boys Dx | £ 5,861,264 | |
| 6061 | Cute Red Industries | £ 50,643,100 | |
| 6062 | Cuthberts Coachworks | £ 596,602,678 | |
| 6063 | Cutthroat | £ 39,315,016 | |
| 6064 | Cutting Down Trees | £ 55,370,240 | |
| 6065 | Cutty Sark | £ 1,910,011,087 | |
| 6066 | cvc | £ 5,541,924 | |
| 6067 | CYAfergie | £ 6,790,092 | |
| 6068 | Cyanide | £ 93,319,153 | |
| 6069 | Cyber Death | £ 125,400,697 | |
| 6070 | Cyber Sharks | £ 82,973,600 | |
| 6071 | Cyber Tech | £ 3,349,487 | |
| 6072 | Cyber Tech Systems | £ 61,126,956 | |
| 6073 | Cyber-Tec | £ 113,594,418 | |
| 6074 | Cybercrime Specialists | £ 298,698,930 | |
| 6075 | cybercrimedetionunit | £ 1,429,198 | |
| 6076 | CyberDeath | £ 100,751,231 | |
| 6077 | CyberDefense Co | £ 58,107,201 | |
| 6078 | Cyberdogs | £ 100,831,693 | |
| 6079 | Cyberdyne | £ 178,339,643 | |
| 6080 | Cyberdyne Corp. | £ 4,285,808 | |
| 6081 | Cyberdyne Systems | £ 492,273,598 | |
| 6082 | Cyberdyne Sytems | £ -1,386,763 | |
| 6083 | CyberLife | £ 1,417,404 | |
| 6084 | Cybernet | £ 50,000 | |
| 6085 | Cyberspace Operations | £ 124,993,625 | |
| 6086 | Cyberterrorism | £ 653,442,761 | |
| 6087 | Cyborg | £ 102,781,192 | |
| 6088 | Cyborgia Inc | £ 11,103,436 | |
| 6089 | cycle | £ 123,247,905 | |
| 6090 | Cycletour | £ 5,504,207 | |
| 6091 | Cyclists | £ 251,051,423 | |
| 6092 | Cyclists are rubbish | £ 50,000 | |
| 6093 | Cyclone | £ 12,449,375 | |
| 6094 | Cyclonic energy | £ 53,352,325 | |
| 6095 | Cydonia | £ 4,972,116 | |
| 6096 | Cydonia Ltd | £ 135,066,044 | |
| 6097 | CYKA | £ 56,980,649 | |
| 6098 | CykaBlyat | £ 5,365,780 | |
| 6099 | cylinders | £ 40,457,131 | |
| 6100 | Cylon | £ 79,057,234 | |
