The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 19401 | Sim City3 | £ 2,672,113 | |
| 19402 | SimCity | £ 115,040,016 | |
| 19403 | Simcoe County | £ 5,557,781 | |
| 19404 | SimEarth | £ 29,985,200 | |
| 19405 | Simon Cowells posterior | £ 240,514,908 | |
| 19406 | Simon Fraser University | £ 119,553,446 | |
| 19407 | Simon The Sprout | £ 392,953,118 | |
| 19408 | Simple | £ 199,139,466 | |
| 19409 | Simple Inc. | £ 161,992,874 | |
| 19410 | Simple Things | £ 55,697,089 | |
| 19411 | simple things in life | £ -150,921 | |
| 19412 | Simpleton Co. | £ 154,696,172 | |
| 19413 | Simplicity | £ 73,991,816 | |
| 19414 | Simply Caesar | £ 95,974,460 | |
| 19415 | simply does it | £ 16,297,060 | |
| 19416 | simply nuts | £ 3,357,807 | |
| 19417 | Simply Sane Products | £ 46,396,437 | |
| 19418 | Simply Subsidiary | £ 23,554,862 | |
| 19419 | simplysouthern | £ 404,043 | |
| 19420 | Sims Company | £ 69,553,563 | |
| 19421 | Simulation | £ 4,647,866 | |
| 19422 | Sin | £ 882,690,513 | |
| 19423 | Sin City | £ 92,965,888 | |
| 19424 | Sin Co | £ 617 | |
| 19425 | Sin Industries | £ 1,511,830 | |
| 19426 | Sin Sentido | £ 253,153,436 | |
| 19427 | Sinaloa | £ 561,410,359 | |
| 19428 | Sinaloa Cartel | £ 102,795,331 | |
| 19429 | Sinar | £ 54,169,012 | |
| 19430 | Sinatra Select | £ 636,672,700 | |
| 19431 | Sinbad the sailor | £ 214,550,415 | |
| 19432 | Since 1796 | £ 69,471,127 | |
| 19433 | Since Day One | £ 2,374,403,849 | |
| 19434 | sincity | £ 207,710,495 | |
| 19435 | Sinclair | £ 10,556,421 | |
| 19436 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 19437 | Sindar | £ 5,505,299 | |
| 19438 | Singani | £ 10,311,313,621 | |
| 19439 | Singapore | £ 453,579,334 | |
| 19440 | Singaporean Gang | £ 2,242,076,225 | |
| 19441 | Singapura | £ 51,209,029 | |
| 19442 | Singh | £ 10,715,804 | |
| 19443 | singham inc | £ 10,963,284 | |
| 19444 | SinghLTD2 | £ 10,446,400 | |
| 19445 | Single Barrel | £ 988,439,929 | |
| 19446 | Single Malt | £ 16,426,947 | |
| 19447 | Single Moms | £ 67,179,425 | |
| 19448 | Sinic Leccy Co | £ 477,855,468 | |
| 19449 | Sinister | £ 1,271,414 | |
| 19450 | Sinister Minister | £ 1,141,709,768 | |
| 19451 | Sink Ships | £ 269,509,457 | |
| 19452 | Sinkain INC | £ 1,959,845 | |
| 19453 | Sinking Ships | £ 81,355,767 | |
| 19454 | Sinners | £ 338,520,161 | |
| 19455 | Sino Group | £ 119,165,256 | |
| 19456 | sins | £ 1,105,930,002 | |
| 19457 | Sioux | £ 2,340,475 | |
| 19458 | sip | £ 4,947,048 | |
| 19459 | SIPAPIAS | £ -5,901,721 | |
| 19460 | Sipledome | £ -8,748,379 | |
| 19461 | Sipral | £ 5,507,397 | |
| 19462 | sips co | £ 5,109,034 | |
| 19463 | Sir Humphry | £ 491,344,886 | |
| 19464 | Sirfound inc | £ -9,263 | |
| 19465 | Sirfound inc2 | £ -3,544 | |
| 19466 | sirius co.uk | £ 549,012,042 | |
| 19467 | Sisko | £ 50,000 | |
| 19468 | sister | £ 562,523,191 | |
| 19469 | Sister Sage | £ -4,405,048 | |
| 19470 | Sisters | £ 47,242,309 | |
| 19471 | Sisyphean | £ 48,163,924 | |
| 19472 | Sisyphus | £ 5,393,053 | |
| 19473 | Sit back | £ 1,014,301,593 | |
| 19474 | Sithis | £ 235,713 | |
| 19475 | Situational Ethics | £ 198,870,320 | |
| 19476 | Sitwel Ent. | £ 13,506,917 | |
| 19477 | Six Feet Under Ltd | £ -1,091,275 | |
| 19478 | Six More | £ 248,598,527 | |
| 19479 | Six Sigma | £ 1,002,493,306 | |
| 19480 | Sixpence None The Richer | £ 590,722,080 | |
| 19481 | Sixteen Tons | £ 16,844,742 | |
| 19482 | Sixteen Vestal Virgins | £ 121,263,981 | |
| 19483 | sixteenth sixes | £ 113,361,305 | |
| 19484 | sixth army | £ 114,993,130 | |
| 19485 | Sixty Nine | £ 341,328,441 | |
| 19486 | Size | £ 1,820,983 | |
| 19487 | size 13s | £ 381,955,715 | |
| 19488 | SJA | £ 40,568,528 | |
| 19489 | SK1 | £ 87,390,278 | |
| 19490 | SK1 Elite | £ 120,651,100 | |
| 19491 | SK1N | £ -5,430 | |
| 19492 | SK2 | £ 86,097,057 | |
| 19493 | SK3 | £ 69,708,527 | |
| 19494 | Skadegamutc | £ 102,163,417 | |
| 19495 | SkaDouche | £ 5,505,074 | |
| 19496 | skanky co | £ 50,000 | |
| 19497 | Skarface Inc. | £ 4,262,037 | |
| 19498 | Skarphace Inc. | £ -2,447,925 | |
| 19499 | SKC | £ 268,804,831 | |
| 19500 | Skean Dhu | £ 989,098,234 | |
