The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 17401 | Thomas the train | £ 5,728,341 | |
| 17402 | Thompson Bros | £ 50,000 | |
| 17403 | Thomson Pharmaceuticals | £ 21,678,152 | |
| 17404 | Thongs | £ 4,188,702 | |
| 17405 | Thor | £ 100,279,247 | |
| 17406 | Thor God of Asgard | £ 6,847,781 | |
| 17407 | Thor of Asgard | £ 61,510,709 | |
| 17408 | Thorn | £ 7,675,133 | |
| 17409 | Thorns | £ 814,169,269 | |
| 17410 | Thorns 2 | £ 185,895,579 | |
| 17411 | Thorns 3 | £ 191,709,697 | |
| 17412 | Thorns In your Shoes | £ 50,063,526 | |
| 17413 | Thornton Inc | £ 312,791 | |
| 17414 | Thorpe Park | £ 3,102,925 | |
| 17415 | Those Butterflies | £ 976,576 | |
| 17416 | those companies | £ 214,336,779 | |
| 17417 | Those Darn Cats | £ 404,489,919 | |
| 17418 | Those Days | £ 73,703,927 | |
| 17419 | Those Flying Pigs | £ 847,051,356 | |
| 17420 | Those In Need | £ 558,305,668 | |
| 17421 | Those Kiosks | £ 233,024 | |
| 17422 | Those People | £ 68,919,063 | |
| 17423 | Those People You Dislike | £ 54,508,542 | |
| 17424 | Those Pithy CompanyNames | £ 26,047,445 | |
| 17425 | Those Things | £ 78,254,418 | |
| 17426 | Thoth | £ 99,775,263 | |
| 17427 | Thots | £ 157,070,524 | |
| 17428 | Thought | £ 2,573,402,311 | |
| 17429 | Thought Nova Ltd | £ 50,000 | |
| 17430 | Thoughts | £ 50,000 | |
| 17431 | Thousands | £ 11,621,797 | |
| 17432 | THPP | £ 49,413,140 | |
| 17433 | Thr0nes | £ 7,151,852 | |
| 17434 | Thrace | £ 43,965,458 | |
| 17435 | Three | £ 303,573,617 | |
| 17436 | Three Blind Mice | £ 1,511,809 | |
| 17437 | three company | £ 50,000 | |
| 17438 | Three Governments | £ 14,151,243 | |
| 17439 | Three Letters | £ 452,132,559 | |
| 17440 | Three Mile Island | £ 584,503 | |
| 17441 | three star | £ 94,849,766 | |
| 17442 | Three United | £ 4,550,567 | |
| 17443 | three wrongs right | £ 53,303,145 | |
| 17444 | threeeeeee | £ 48,364,633 | |
| 17445 | Thriller | £ 563,622,174 | |
| 17446 | Thrillers | £ 9,137,333 | |
| 17447 | Thrills | £ 305,265,309 | |
| 17448 | Throat | £ 413,819,852 | |
| 17449 | thrones | £ 97,127,004 | |
| 17450 | Through | £ 58,634,903 | |
| 17451 | Throw | £ 3,396,135 | |
| 17452 | Throw Away Comps 1 | £ 203,815,625 | |
| 17453 | Throw Away Comps 2 | £ 206,634,905 | |
| 17454 | Thrumster | £ 582,678,635 | |
| 17455 | Thrux | £ 431,791,013 | |
| 17456 | Thruxton | £ 21,098,764 | |
| 17457 | Thuggernaut | £ 7,181,707,140 | |
| 17458 | Thugs Rule | £ 152,167 | |
| 17459 | Thumb | £ 7,964,152,845 | |
| 17460 | Thumper | £ 554,693 | |
| 17461 | Thumper Exchange | £ 42,355,148 | |
| 17462 | thunder | £ 146,482,142 | |
| 17463 | Thunder Co | £ 62,548 | |
| 17464 | Thunder Road | £ 239,783,547 | |
| 17465 | thunder13 | £ 4,571,399 | |
| 17466 | thunder35 | £ 4,109,673 | |
| 17467 | Thunderbird 1 | £ 585,236,342 | |
| 17468 | Thunderbird 2 | £ 563,934,308 | |
| 17469 | Thunderbird 3 | £ 239,885,580 | |
| 17470 | Thunderbird 4 | £ 274,684,520 | |
| 17471 | Thunderbird 5 | £ 398,795,967 | |
| 17472 | Thunderbolt | £ 6,622,467 | |
| 17473 | ThunderDome | £ 316,214,683 | |
| 17474 | ThunderKeg | £ 5,549,046 | |
| 17475 | thundershlong | £ 1,266,427 | |
| 17476 | Thunderstruck | £ 1,565,465 | |
| 17477 | Thurso | £ 169,556,475 | |
| 17478 | Thwarted Evil | £ 13,556,255 | |
| 17479 | Thyrllan | £ 859,339 | |
| 17480 | Ti nker Toys | £ 47,840,068 | |
| 17481 | Tibbs Motors | £ 213,919,647 | |
| 17482 | Tiberian | £ 493,604,567 | |
| 17483 | Tickets | £ 50,000 | |
| 17484 | Ticking Clock | £ 219,057,993 | |
| 17485 | Tickle Enterprises | £ 22,971,170 | |
| 17486 | Tickle Your Fancy | £ 5,664,032 | |
| 17487 | TickTOck | £ 127,199,969 | |
| 17488 | Tie Figher Swarm | £ 1,221,063 | |
| 17489 | Tieback | £ 479,609,370 | |
| 17490 | Tiffany | £ 5,508,613 | |
| 17491 | tiger | £ 327,716,580 | |
| 17492 | Tiger Cubs | £ 865,370,204 | |
| 17493 | Tiger Holdings | £ 75,072,306 | |
| 17494 | Tiger Inc | £ 59,321,765 | |
| 17495 | Tiger Inc. | £ 179,228,881 | |
| 17496 | Tiger Ind | £ 1,516,293,468 | |
| 17497 | Tiger Industries | £ 1,548,639 | |
| 17498 | Tiger land | £ 50,000 | |
| 17499 | Tiger Ltd | £ 499,340,466 | |
| 17500 | Tiger Shark | £ 50,000 | |
