The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 17401 | Sick on a Widow | £ 145,081,811 | |
| 17402 | Sickness | £ -10,078,045 | |
| 17403 | Sickoz Company | £ 776,372,485 | |
| 17404 | sid | £ 16,772,505 | |
| 17405 | Sid The Sexist | £ 11,083,450 | |
| 17406 | Sidders85 inc | £ 50,000 | |
| 17407 | Side Pony | £ 191,337,989 | |
| 17408 | SideLineD | £ 3,552,075 | |
| 17409 | Sidewinder | £ 227,297,344 | |
| 17410 | Sidewinder Missle | £ 57,732,378 | |
| 17411 | Sidney inc | £ 50,000 | |
| 17412 | Sids Emporium | £ 15,032,548 | |
| 17413 | Sieber | £ 50,000 | |
| 17414 | Sifosed Enterprises | £ 25,255 | |
| 17415 | Sift co | £ -137,410 | |
| 17416 | Sighs | £ 9,874,626 | |
| 17417 | Sight | £ 200,734,160 | |
| 17418 | Sigma Industries | £ 17,556 | |
| 17419 | Sigma-957 | £ 56,676,770 | |
| 17420 | Sigma-Aldrich | £ 434,440,832 | |
| 17421 | Sign | £ 51,894,494 | |
| 17422 | Sign Your Life Away | £ 41,019,352 | |
| 17423 | Signals | £ 255,231,164 | |
| 17424 | Silat | £ 126,598,241 | |
| 17425 | Silence | £ 8,757,419 | |
| 17426 | silent assassin | £ 1,250,769 | |
| 17427 | Silent Contractors | £ 50,000 | |
| 17428 | Silent Inc. | £ 286,365,315 | |
| 17429 | Silent Stalker | £ 1,059,795 | |
| 17430 | Silent Witness | £ 511,752,351 | |
| 17431 | Silent_Whisper | £ 189,456,569 | |
| 17432 | Silica | £ 5,383,475 | |
| 17433 | Silica Gel | £ 416,330,491 | |
| 17434 | Silicon Valley | £ 287,653,458 | |
| 17435 | Silk Boxers | £ 79,929,679 | |
| 17436 | Silly Walks | £ 8,973,455 | |
| 17437 | SillyPutty | £ 39,214,929 | |
| 17438 | Siloporten | £ 6,969,503 | |
| 17439 | silva | £ 36,054,742 | |
| 17440 | Silver | £ 1,180,244,063 | |
| 17441 | Silver Aftershock | £ 56,640,118 | |
| 17442 | Silver Haze | £ 320,165,501 | |
| 17443 | Silver Inc | £ 10,197,661 | |
| 17444 | Silver Plated Netrobucks | £ 169,274,529 | |
| 17445 | Silver Shamrock Inc | £ 2,317,866 | |
| 17446 | Silver Surfer | £ 644,384,321 | |
| 17447 | Silver Wings | £ 1,381,690,294 | |
| 17448 | Silverdale St | £ 30,471,547 | |
| 17449 | Silvermoon Enterprises | £ -214,855 | |
| 17450 | Silvertide Enterprises | £ -1,627,976 | |
| 17451 | silvra | £ 54,285,205 | |
| 17452 | Sim City3 | £ 2,672,113 | |
| 17453 | Simcoe County | £ 21,842,958 | |
| 17454 | Simon Cowells posterior | £ 240,514,908 | |
| 17455 | Simon Fraser University | £ 119,553,446 | |
| 17456 | Simon The Sprout | £ 384,230,740 | |
| 17457 | Simple | £ 199,139,466 | |
| 17458 | Simple Inc. | £ 161,992,874 | |
| 17459 | Simple Things | £ 55,697,089 | |
| 17460 | simple things in life | £ -150,921 | |
| 17461 | SimpleS | £ 45,372,564 | |
| 17462 | Simpleton Co. | £ 154,696,172 | |
| 17463 | Simplicity | £ 73,991,816 | |
| 17464 | simply does it | £ 16,297,060 | |
| 17465 | simply nuts | £ 3,357,807 | |
| 17466 | Simply Sane Products | £ 46,396,437 | |
| 17467 | simplysouthern | £ 404,043 | |
| 17468 | Simulation | £ 4,647,866 | |
| 17469 | Sin | £ 882,690,513 | |
| 17470 | Sin City | £ 92,965,888 | |
| 17471 | Sin Co | £ 617 | |
| 17472 | Sin Industries | £ 1,511,830 | |
| 17473 | Sin Sentido | £ 253,153,436 | |
| 17474 | Sinaloa | £ 307,893,361 | |
| 17475 | Sinatra Select | £ 636,672,700 | |
| 17476 | Sinbad the sailor | £ 214,550,415 | |
| 17477 | Since Day 1 | £ 61,665,725 | |
| 17478 | Since Day Five | £ 1,269,840,184 | |
| 17479 | Since Day four | £ 1,497,107,921 | |
| 17480 | Since Day One | £ 891,457,825 | |
| 17481 | Since Day Three | £ 12,774,055 | |
| 17482 | Since Day two | £ 79,962,320 | |
| 17483 | sincity | £ 207,710,495 | |
| 17484 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 17485 | Sindar | £ 5,505,299 | |
| 17486 | Sindul Delights | £ -981 | |
| 17487 | Singani | £ 10,311,313,621 | |
| 17488 | Singapore | £ 453,579,334 | |
| 17489 | Singapore Garden | £ 622,612,542 | |
| 17490 | singham inc | £ 10,963,284 | |
| 17491 | SinghLTD2 | £ 10,446,400 | |
| 17492 | Single Barrel | £ 988,439,929 | |
| 17493 | Single Malt | £ 16,426,947 | |
| 17494 | Single Moms | £ 67,993,469 | |
| 17495 | Sinic Leccy Co | £ 477,855,468 | |
| 17496 | Sinister | £ 1,271,414 | |
| 17497 | Sinister Minister | £ 577,340,035 | |
| 17498 | Sink | £ 2,232,154 | |
| 17499 | Sink Ships | £ 269,509,457 | |
| 17500 | Sinkain INC | £ 1,959,845 | |
