The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 18401 | Sieber | £ 50,000 | |
| 18402 | Sierra Leone | £ 83,822,248 | |
| 18403 | Sifosed Enterprises | £ 75,255 | |
| 18404 | Sift co | £ -87,410 | |
| 18405 | SIG Sauer | £ 51,238,462 | |
| 18406 | Sight | £ 200,734,160 | |
| 18407 | sightings | £ 3,988,279 | |
| 18408 | Sigma | £ 69,225,770 | |
| 18409 | Sigma Industries | £ 67,556 | |
| 18410 | Sigma-957 | £ 56,676,770 | |
| 18411 | Sigma-Aldrich | £ 4,582,104,682 | |
| 18412 | Sign | £ 51,894,494 | |
| 18413 | Signals | £ 334,445,981 | |
| 18414 | Silat | £ 224,852,851 | |
| 18415 | Silence | £ 22,563,076 | |
| 18416 | silent assassin | £ 1,250,769 | |
| 18417 | Silent Contractors | £ 50,000 | |
| 18418 | Silent Inc. | £ 286,365,315 | |
| 18419 | Silent Predator | £ -3,661,093 | |
| 18420 | Silent Stalker | £ 1,059,795 | |
| 18421 | Silent Stalkers | £ 5,382,002 | |
| 18422 | Silent Synd. | £ 4,432,208 | |
| 18423 | Silent Thoughts | £ 3,192,295 | |
| 18424 | Silent_Whisper | £ 189,456,569 | |
| 18425 | Silica Gel | £ 416,330,491 | |
| 18426 | Silk Boxers | £ 79,929,679 | |
| 18427 | silly giggles | £ 3,705,497 | |
| 18428 | Silly Sausage | £ 8,595,625 | |
| 18429 | Silly Sock Emporium | £ 37,874,596 | |
| 18430 | Silly Walks | £ 8,973,455 | |
| 18431 | SillyPutty | £ 39,214,929 | |
| 18432 | Silmarils Inc | £ 5,502,423 | |
| 18433 | Siloporten | £ 6,969,503 | |
| 18434 | silva | £ 36,054,742 | |
| 18435 | Silver | £ 1,180,220,963 | |
| 18436 | Silver Aftershock | £ 56,640,118 | |
| 18437 | Silver Haze | £ 320,165,501 | |
| 18438 | Silver Inc | £ 10,197,661 | |
| 18439 | Silver Plated Netrobucks | £ 169,274,529 | |
| 18440 | Silver Pot | £ 56,972,978 | |
| 18441 | Silver Shamrock Inc | £ 2,317,866 | |
| 18442 | Silver Spoon Cafe | £ 315,835,268 | |
| 18443 | Silver Surfer | £ 760,639,438 | |
| 18444 | Silver Wings | £ 1,381,690,294 | |
| 18445 | Silverdale St | £ 30,471,547 | |
| 18446 | Silvermoon Enterprises | £ -164,855 | |
| 18447 | Silvertide Enterprises | £ -1,577,976 | |
| 18448 | silvra | £ 54,285,205 | |
| 18449 | Sim City3 | £ 2,672,113 | |
| 18450 | Simcoe County | £ 5,557,781 | |
| 18451 | Simon Cowells posterior | £ 240,514,908 | |
| 18452 | Simon Fraser University | £ 119,553,446 | |
| 18453 | Simon The Sprout | £ 392,953,118 | |
| 18454 | Simple | £ 199,139,466 | |
| 18455 | Simple Inc. | £ 161,992,874 | |
| 18456 | Simple Moments | £ 50,000 | |
| 18457 | Simple Things | £ 55,697,089 | |
| 18458 | simple things in life | £ -100,921 | |
| 18459 | Simpleton Co. | £ 154,696,172 | |
| 18460 | Simplicity | £ 73,991,816 | |
| 18461 | Simply Caesar | £ 95,974,460 | |
| 18462 | simply does it | £ 16,297,060 | |
| 18463 | simply nuts | £ 3,357,807 | |
| 18464 | Simply Sane Products | £ 46,396,437 | |
| 18465 | Simply Subsidiary | £ 23,554,862 | |
| 18466 | simplysouthern | £ 404,043 | |
| 18467 | Sims Company | £ 69,553,563 | |
| 18468 | Simulation | £ 4,647,866 | |
| 18469 | Sin | £ 882,690,513 | |
| 18470 | Sin City | £ 92,965,888 | |
| 18471 | Sin Co | £ 50,617 | |
| 18472 | Sin Industries | £ 1,511,830 | |
| 18473 | Sin Sentido | £ 253,153,436 | |
| 18474 | Sinaloa | £ 485,952,664 | |
| 18475 | Sinaloa Cartel | £ 102,795,331 | |
| 18476 | Sinar | £ 46,425,836 | |
| 18477 | Sinatra Select | £ 636,672,700 | |
| 18478 | Sinbad the sailor | £ 214,550,415 | |
| 18479 | Since Day Five | £ 2,948,115,072 | |
| 18480 | Since Day four | £ 1,582,450,594 | |
| 18481 | Since Day One | £ 2,293,425,613 | |
| 18482 | Since Day Three | £ 321,438,655 | |
| 18483 | Since Day two | £ 955,774,076 | |
| 18484 | sincity | £ 207,710,495 | |
| 18485 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 18486 | Sindar | £ 5,505,299 | |
| 18487 | SINDATERA | £ 4,301,225 | |
| 18488 | Singani | £ 10,311,313,621 | |
| 18489 | Singapore | £ 453,579,334 | |
| 18490 | Singapura | £ 51,209,029 | |
| 18491 | Singh | £ 10,715,804 | |
| 18492 | singham inc | £ 10,963,284 | |
| 18493 | SinghLTD2 | £ 10,446,400 | |
| 18494 | Single Barrel | £ 988,439,929 | |
| 18495 | Single Malt | £ 16,426,947 | |
| 18496 | Single Moms | £ 60,668,758 | |
| 18497 | Sinic Leccy Co | £ 477,855,468 | |
| 18498 | Sinister | £ 1,271,414 | |
| 18499 | Sinister Minister | £ 1,140,278,250 | |
| 18500 | Sink Ships | £ 269,509,457 | |
