The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16401 | Sicily | £ 38,366,402 | |
| 16402 | Sick | £ 44,661,349 | |
| 16403 | Sick on a Widow | £ 145,081,811 | |
| 16404 | Sickness | £ -10,078,045 | |
| 16405 | Sickoz Company | £ 776,372,485 | |
| 16406 | sid | £ 16,772,505 | |
| 16407 | Sid The Sexist | £ 11,083,450 | |
| 16408 | Sidders85 inc | £ 50,000 | |
| 16409 | Side Pony | £ 191,337,989 | |
| 16410 | SideLineD | £ 3,552,075 | |
| 16411 | Sidewinder | £ 207,797,344 | |
| 16412 | Sidney inc | £ 50,000 | |
| 16413 | Sids Emporium | £ 15,032,548 | |
| 16414 | Sieber | £ 50,000 | |
| 16415 | Sifosed Enterprises | £ 25,255 | |
| 16416 | Sift co | £ -137,410 | |
| 16417 | Sighs | £ 9,874,626 | |
| 16418 | Sight | £ 200,734,160 | |
| 16419 | Sigma Industries | £ 17,556 | |
| 16420 | Sigma-957 | £ 56,676,770 | |
| 16421 | Sigma-Aldrich | £ 52,231,219 | |
| 16422 | Sign | £ 51,894,494 | |
| 16423 | Signals | £ 43,183,360 | |
| 16424 | Silat | £ 126,598,241 | |
| 16425 | Silence | £ 80,546,554 | |
| 16426 | silent assassin | £ 1,250,769 | |
| 16427 | Silent Inc. | £ 286,365,315 | |
| 16428 | Silent Stalker | £ 1,059,795 | |
| 16429 | Silent Witness | £ 249,216,445 | |
| 16430 | Silent_Whisper | £ 189,456,569 | |
| 16431 | Silica Gel | £ 416,330,491 | |
| 16432 | Silicon Valley | £ 154,738,029 | |
| 16433 | Silk Boxers | £ 79,929,679 | |
| 16434 | Silly Walks | £ 8,973,455 | |
| 16435 | SillyPutty | £ 39,214,929 | |
| 16436 | Siloporten | £ 6,969,503 | |
| 16437 | silva | £ 36,054,742 | |
| 16438 | Silver | £ 1,180,244,063 | |
| 16439 | Silver Aftershock | £ 56,640,118 | |
| 16440 | Silver Haze | £ 286,306,148 | |
| 16441 | Silver Inc | £ 10,197,661 | |
| 16442 | Silver Plated Netrobucks | £ 168,199,969 | |
| 16443 | Silver Shamrock Inc | £ 2,317,866 | |
| 16444 | Silver Surfer | £ 592,111,430 | |
| 16445 | Silver Wings | £ 1,381,690,294 | |
| 16446 | Silverdale St | £ 30,471,547 | |
| 16447 | Silvermoon Enterprises | £ -214,855 | |
| 16448 | Silvertide Enterprises | £ -1,627,976 | |
| 16449 | silvra | £ 54,285,205 | |
| 16450 | Sim City3 | £ 2,672,113 | |
| 16451 | Simon Cowells posterior | £ 240,514,908 | |
| 16452 | Simon Fraser University | £ 119,553,446 | |
| 16453 | Simon The Sprout | £ 198,588,267 | |
| 16454 | Simple | £ 199,139,466 | |
| 16455 | Simple Inc. | £ 161,992,874 | |
| 16456 | Simple Things | £ 55,697,089 | |
| 16457 | simple things in life | £ -150,921 | |
| 16458 | SimpleS | £ 45,372,564 | |
| 16459 | Simpleton Co. | £ 154,696,172 | |
| 16460 | Simplicity | £ 73,991,816 | |
| 16461 | simply does it | £ 16,297,060 | |
| 16462 | simply nuts | £ 3,357,807 | |
| 16463 | Simply Sane Products | £ 46,396,437 | |
| 16464 | simplysouthern | £ 404,043 | |
| 16465 | Simulation | £ 4,647,866 | |
| 16466 | Sin | £ 882,690,513 | |
| 16467 | Sin City | £ 92,965,888 | |
| 16468 | Sin Co | £ 617 | |
| 16469 | Sin Sentido | £ 253,153,436 | |
| 16470 | Sinaloa | £ 245,181,554 | |
| 16471 | Sinatra Select | £ 636,672,700 | |
| 16472 | Sinbad the sailor | £ 214,550,415 | |
| 16473 | Since Day 1 | £ 61,665,725 | |
| 16474 | Since Day Five | £ 1,216,915,969 | |
| 16475 | Since Day four | £ 1,253,583,560 | |
| 16476 | Since Day One | £ 659,911,378 | |
| 16477 | Since Day Three | £ 310,828,290 | |
| 16478 | Since Day two | £ 387,020,148 | |
| 16479 | sincity | £ 207,710,495 | |
| 16480 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 16481 | Sindar | £ 5,505,299 | |
| 16482 | Singani | £ 10,311,068,262 | |
| 16483 | Singapore | £ 453,579,334 | |
| 16484 | Singapore Garden | £ 612,308,133 | |
| 16485 | singham inc | £ 10,963,284 | |
| 16486 | SinghLTD2 | £ 10,446,400 | |
| 16487 | Single Barrel | £ 988,439,929 | |
| 16488 | Single Malt | £ 16,426,947 | |
| 16489 | Single Moms | £ 399,906,470 | |
| 16490 | Sinic Leccy Co | £ 477,855,468 | |
| 16491 | Sinister | £ 1,271,414 | |
| 16492 | Sinister Minister | £ 282,341,579 | |
| 16493 | Sink | £ 2,232,154 | |
| 16494 | Sink Ships | £ 269,509,457 | |
| 16495 | Sinkain INC | £ 1,929,856 | |
| 16496 | Sinking Ships | £ 81,355,767 | |
| 16497 | Sinners | £ 264,360,134 | |
| 16498 | sins | £ 1,105,930,002 | |
| 16499 | sinsinattee | £ 77,807 | |
| 16500 | Sion | £ 45,276,606 | |
