The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 18001 | Thongs | £ 4,188,702 | |
| 18002 | Thor | £ 322,622,616 | |
| 18003 | Thor God of Asgard | £ 6,847,781 | |
| 18004 | Thor of Asgard | £ 61,510,709 | |
| 18005 | Thorn | £ 7,675,133 | |
| 18006 | Thorns | £ 813,276,327 | |
| 18007 | Thorns 2 | £ 185,895,579 | |
| 18008 | Thorns 3 | £ 191,709,697 | |
| 18009 | Thorns In your Shoes | £ 50,063,526 | |
| 18010 | Thornton Inc | £ 312,791 | |
| 18011 | Thorpe Park | £ 3,102,925 | |
| 18012 | Those Butterflies | £ 976,576 | |
| 18013 | those companies | £ 214,336,779 | |
| 18014 | Those Darn Cats | £ 909,507,793 | |
| 18015 | Those Days | £ 73,703,927 | |
| 18016 | Those Flying Pigs | £ 862,071,210 | |
| 18017 | Those In Need | £ 558,305,668 | |
| 18018 | Those Kiosks | £ 233,024 | |
| 18019 | Those People | £ 68,919,063 | |
| 18020 | Those People You Dislike | £ 54,508,542 | |
| 18021 | Those Pithy CompanyNames | £ 26,047,445 | |
| 18022 | Those Things | £ 78,254,418 | |
| 18023 | Thoth | £ 99,775,263 | |
| 18024 | Thots | £ 157,031,236 | |
| 18025 | Thotty Sues Diner | £ 50,000 | |
| 18026 | Thought | £ 2,573,402,311 | |
| 18027 | Thought Nova Ltd | £ 50,000 | |
| 18028 | Thoughts | £ 50,000 | |
| 18029 | Thousands | £ 11,621,797 | |
| 18030 | THPP | £ 49,413,140 | |
| 18031 | Thr0nes | £ 7,151,852 | |
| 18032 | Thrace | £ 43,965,458 | |
| 18033 | Three | £ 303,573,617 | |
| 18034 | Three Blind Mice | £ 1,511,809 | |
| 18035 | three company | £ 50,000 | |
| 18036 | Three Governments | £ 14,151,243 | |
| 18037 | Three Letters | £ 452,132,559 | |
| 18038 | Three Mile Island | £ 4,458,893 | |
| 18039 | three star | £ 94,849,766 | |
| 18040 | Three United | £ 4,550,567 | |
| 18041 | three wrongs right | £ 1,303,145 | |
| 18042 | threeeeeee | £ 49,664,351 | |
| 18043 | Thriller | £ 563,622,174 | |
| 18044 | Thrillers | £ 9,137,333 | |
| 18045 | Thrills | £ 305,265,309 | |
| 18046 | Throat | £ 413,819,852 | |
| 18047 | thrones | £ 97,127,004 | |
| 18048 | Through | £ 58,634,903 | |
| 18049 | Through the Snow | £ 50,000 | |
| 18050 | Throw | £ 3,396,135 | |
| 18051 | Throw Away Comps 1 | £ 203,815,625 | |
| 18052 | Throw Away Comps 2 | £ 206,634,905 | |
| 18053 | Thrumster | £ 1,165,566,497 | |
| 18054 | Thrux | £ 636,360,126 | |
| 18055 | Thruxton | £ 151,735,417 | |
| 18056 | Thuggernaut | £ 8,688,291,061 | |
| 18057 | Thugs Rule | £ 152,167 | |
| 18058 | Thumb | £ 9,475,578,327 | |
| 18059 | Thumper | £ 554,693 | |
| 18060 | Thumper Exchange | £ 42,355,148 | |
| 18061 | thunder | £ 219,702,018 | |
| 18062 | Thunder Co | £ 62,548 | |
| 18063 | Thunder Road | £ 984,263,804 | |
| 18064 | thunder13 | £ 4,571,399 | |
| 18065 | thunder35 | £ 4,109,673 | |
| 18066 | Thunderbird 1 | £ 585,236,342 | |
| 18067 | Thunderbird 2 | £ 563,934,308 | |
| 18068 | Thunderbird 3 | £ 239,885,580 | |
| 18069 | Thunderbird 4 | £ 274,684,520 | |
| 18070 | Thunderbird 5 | £ 398,795,967 | |
| 18071 | Thunderbolt | £ 6,622,467 | |
| 18072 | ThunderDome | £ 316,214,683 | |
| 18073 | ThunderKeg | £ 5,549,046 | |
| 18074 | thundershlong | £ 1,266,427 | |
| 18075 | Thunderstruck | £ 1,565,465 | |
| 18076 | Thurso | £ 179,052,281 | |
| 18077 | Thwarted Evil | £ 13,556,255 | |
| 18078 | Thyme | £ 6,962,851 | |
| 18079 | Thyrllan | £ 859,339 | |
| 18080 | Ti nker Toys | £ 47,840,068 | |
| 18081 | Tibbs Motors | £ 212,284,192 | |
| 18082 | Tiberian | £ 509,332,791 | |
| 18083 | Tickets | £ 50,000 | |
| 18084 | Ticking Clock | £ 219,057,993 | |
| 18085 | Tickle Enterprises | £ 22,971,170 | |
| 18086 | Tickle Your Fancy | £ 5,664,032 | |
| 18087 | TickTOck | £ 127,199,969 | |
| 18088 | Tie Figher Swarm | £ 1,221,063 | |
| 18089 | Tieback | £ 479,609,370 | |
| 18090 | Tiffany | £ 5,508,613 | |
| 18091 | tiger | £ 327,716,580 | |
| 18092 | Tiger Cubs | £ 865,370,204 | |
| 18093 | Tiger Holdings | £ 75,072,306 | |
| 18094 | Tiger Inc | £ 59,321,765 | |
| 18095 | Tiger Inc. | £ 179,228,881 | |
| 18096 | Tiger Ind | £ 1,516,293,468 | |
| 18097 | Tiger Industries | £ 1,548,639 | |
| 18098 | Tiger land | £ 50,000 | |
| 18099 | Tiger Ltd | £ 499,340,466 | |
| 18100 | Tiger Shark | £ 50,000 | |
