The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 14501 | silent assassin | £ 1,250,769 | |
| 14502 | Silent Inc. | £ 286,365,315 | |
| 14503 | Silent Stalker | £ 1,059,795 | |
| 14504 | Silent_Whisper | £ 143,138,744 | |
| 14505 | Silica Gel | £ 416,330,491 | |
| 14506 | Silk Boxers | £ 79,929,679 | |
| 14507 | Silly Walks | £ 8,973,455 | |
| 14508 | SillyPutty | £ 39,214,929 | |
| 14509 | Siloporten | £ 6,969,503 | |
| 14510 | silva | £ 36,054,742 | |
| 14511 | Silver | £ 1,180,244,063 | |
| 14512 | Silver Aftershock | £ 56,640,118 | |
| 14513 | Silver Fox Inc | £ 2,634,600 | |
| 14514 | Silver Haze | £ 156,116,186 | |
| 14515 | Silver Inc | £ 10,197,661 | |
| 14516 | Silver Plated Netrobucks | £ 98,202,954 | |
| 14517 | Silver Shamrock Inc | £ 2,317,866 | |
| 14518 | Silver Surfer | £ 135,365,663 | |
| 14519 | Silver Wings | £ 1,316,964,974 | |
| 14520 | Silverdale St | £ 30,471,547 | |
| 14521 | Silvermoon Enterprises | £ -214,855 | |
| 14522 | Silvertide Enterprises | £ -1,627,976 | |
| 14523 | silvra | £ 54,285,205 | |
| 14524 | Sim City3 | £ 2,672,113 | |
| 14525 | Simon Cowells posterior | £ 240,514,908 | |
| 14526 | Simon Fraser University | £ 119,553,446 | |
| 14527 | Simple | £ 180,288,756 | |
| 14528 | Simple Inc. | £ 161,992,874 | |
| 14529 | simple things in life | £ -150,921 | |
| 14530 | SimpleS | £ 45,372,564 | |
| 14531 | Simpleton Co. | £ 154,696,172 | |
| 14532 | Simplicity | £ 73,991,816 | |
| 14533 | simply does it | £ 16,297,060 | |
| 14534 | simply nuts | £ 3,357,807 | |
| 14535 | Simply Sane Products | £ 46,396,437 | |
| 14536 | simplysouthern | £ 404,043 | |
| 14537 | Simulation | £ 4,647,866 | |
| 14538 | Sin | £ 882,690,513 | |
| 14539 | Sin City | £ 62,000,387 | |
| 14540 | Sin Co | £ 617 | |
| 14541 | Sin Sentido | £ 253,153,436 | |
| 14542 | Sinaloa | £ 122,977,618 | |
| 14543 | Sinatra Select | £ 361,569,082 | |
| 14544 | Sinbad the sailor | £ 202,988,417 | |
| 14545 | Since Day 1 | £ 61,665,725 | |
| 14546 | Since Day Five | £ 274,098,682 | |
| 14547 | Since Day four | £ 746,311,778 | |
| 14548 | Since Day One | £ 430,073,591 | |
| 14549 | Since Day Three | £ 196,251,730 | |
| 14550 | Since Day two | £ 181,200,047 | |
| 14551 | sincity | £ 207,710,495 | |
| 14552 | Sinclair Girnigoe | £ 986,781,821 | |
| 14553 | Sindar | £ 5,505,299 | |
| 14554 | Singani | £ 10,300,982,183 | |
| 14555 | Singapore | £ 453,579,334 | |
| 14556 | Singapore Garden | £ 560,801,327 | |
| 14557 | singham inc | £ 10,963,284 | |
| 14558 | SinghLTD2 | £ 10,446,400 | |
| 14559 | Single Barrel | £ 747,236,932 | |
| 14560 | Single Malt | £ 16,426,947 | |
| 14561 | Single Moms | £ 187,463,171 | |
| 14562 | Sinic Leccy Co | £ 477,855,468 | |
| 14563 | Sinister | £ 1,271,414 | |
| 14564 | Sink | £ 2,232,154 | |
| 14565 | Sink Ships | £ 269,509,457 | |
| 14566 | Sinkain INC | £ 1,929,856 | |
| 14567 | Sinking Ships | £ 81,355,767 | |
| 14568 | sins | £ 1,094,372,839 | |
| 14569 | sinsinattee | £ 77,807 | |
| 14570 | Sion | £ 45,276,606 | |
| 14571 | sip | £ 4,947,048 | |
| 14572 | SIPAPIAS | £ -5,901,721 | |
| 14573 | Sipledome | £ -8,748,379 | |
| 14574 | sips co | £ 5,109,034 | |
| 14575 | Siren | £ 17,058,704 | |
| 14576 | sister | £ 58,271,214 | |
| 14577 | Sisters | £ 47,242,309 | |
| 14578 | Sisyphean | £ 48,163,924 | |
| 14579 | Sithis | £ 235,713 | |
| 14580 | Sitwel Ent. | £ 8,334,708 | |
| 14581 | Six Feet Under Ltd | £ -1,091,275 | |
| 14582 | Six More | £ 248,598,527 | |
| 14583 | Sixes | £ 116,651,618 | |
| 14584 | Sixpence None The Richer | £ 590,722,080 | |
| 14585 | Sixteen Vestal Virgins | £ 121,263,981 | |
| 14586 | Size | £ 1,820,983 | |
| 14587 | size 13s | £ 381,955,715 | |
| 14588 | SJA | £ 40,568,528 | |
| 14589 | SK1 | £ 87,390,278 | |
| 14590 | SK1 Elite | £ 120,651,100 | |
| 14591 | SK1N | £ -5,430 | |
| 14592 | SK2 | £ 86,097,057 | |
| 14593 | SK3 | £ 69,708,527 | |
| 14594 | skadooodle | £ 11,901,242 | |
| 14595 | SkaDouche | £ 5,505,074 | |
| 14596 | Skank | £ 23,429,613 | |
| 14597 | skanky co | £ 50,000 | |
| 14598 | Skarface Inc. | £ 4,262,037 | |
| 14599 | Skaro | £ 1,623,416 | |
| 14600 | Skarphace Inc. | £ -2,447,925 | |
