The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 17001 | Signals | £ 142,088,394 | |
| 17002 | Silat | £ 126,598,241 | |
| 17003 | Silence | £ 83,746,207 | |
| 17004 | silent assassin | £ 1,250,769 | |
| 17005 | Silent Contractors | £ 50,000 | |
| 17006 | Silent Inc. | £ 286,365,315 | |
| 17007 | Silent Stalker | £ 1,059,795 | |
| 17008 | Silent Witness | £ 412,015,964 | |
| 17009 | Silent_Whisper | £ 189,456,569 | |
| 17010 | Silica Gel | £ 416,330,491 | |
| 17011 | Silicon Valley | £ 235,278,213 | |
| 17012 | Silk Boxers | £ 79,929,679 | |
| 17013 | Silly Walks | £ 8,973,455 | |
| 17014 | SillyPutty | £ 39,214,929 | |
| 17015 | Siloporten | £ 6,969,503 | |
| 17016 | silva | £ 36,054,742 | |
| 17017 | Silver | £ 1,180,244,063 | |
| 17018 | Silver Aftershock | £ 56,640,118 | |
| 17019 | Silver Haze | £ 320,165,501 | |
| 17020 | Silver Inc | £ 10,197,661 | |
| 17021 | Silver Plated Netrobucks | £ 169,274,529 | |
| 17022 | Silver Shamrock Inc | £ 2,317,866 | |
| 17023 | Silver Surfer | £ 591,933,735 | |
| 17024 | Silver Wings | £ 1,381,690,294 | |
| 17025 | Silverdale St | £ 30,471,547 | |
| 17026 | Silvermoon Enterprises | £ -214,855 | |
| 17027 | Silvertide Enterprises | £ -1,627,976 | |
| 17028 | silvra | £ 54,285,205 | |
| 17029 | Sim City3 | £ 2,672,113 | |
| 17030 | Simon Cowells posterior | £ 240,514,908 | |
| 17031 | Simon Fraser University | £ 119,553,446 | |
| 17032 | Simon The Sprout | £ 323,536,372 | |
| 17033 | Simple | £ 199,139,466 | |
| 17034 | Simple Inc. | £ 161,992,874 | |
| 17035 | Simple Things | £ 55,697,089 | |
| 17036 | simple things in life | £ -150,921 | |
| 17037 | SimpleS | £ 45,372,564 | |
| 17038 | Simpleton Co. | £ 154,696,172 | |
| 17039 | Simplicity | £ 73,991,816 | |
| 17040 | simply does it | £ 16,297,060 | |
| 17041 | simply nuts | £ 3,357,807 | |
| 17042 | Simply Sane Products | £ 46,396,437 | |
| 17043 | simplysouthern | £ 404,043 | |
| 17044 | Simulation | £ 4,647,866 | |
| 17045 | Sin | £ 882,690,513 | |
| 17046 | Sin City | £ 92,965,888 | |
| 17047 | Sin Co | £ 617 | |
| 17048 | Sin Sentido | £ 253,153,436 | |
| 17049 | Sinaloa | £ 266,090,357 | |
| 17050 | Sinatra Select | £ 636,672,700 | |
| 17051 | Sinbad the sailor | £ 214,550,415 | |
| 17052 | Since Day 1 | £ 61,665,725 | |
| 17053 | Since Day Five | £ 1,269,078,144 | |
| 17054 | Since Day four | £ 1,381,457,277 | |
| 17055 | Since Day One | £ 740,391,336 | |
| 17056 | Since Day Three | £ 48,899,641 | |
| 17057 | Since Day two | £ 79,894,036 | |
| 17058 | sincity | £ 207,710,495 | |
| 17059 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 17060 | Sindar | £ 5,505,299 | |
| 17061 | Singani | £ 10,311,068,262 | |
| 17062 | Singapore | £ 453,579,334 | |
| 17063 | Singapore Garden | £ 622,572,796 | |
| 17064 | singham inc | £ 10,963,284 | |
| 17065 | SinghLTD2 | £ 10,446,400 | |
| 17066 | Single Barrel | £ 988,439,929 | |
| 17067 | Single Malt | £ 16,426,947 | |
| 17068 | Single Moms | £ 41,396,479 | |
| 17069 | Sinic Leccy Co | £ 477,855,468 | |
| 17070 | Sinister | £ 1,271,414 | |
| 17071 | Sinister Minister | £ 434,272,691 | |
| 17072 | Sink | £ 2,232,154 | |
| 17073 | Sink Ships | £ 269,509,457 | |
| 17074 | Sinkain INC | £ 1,959,845 | |
| 17075 | Sinking Ships | £ 81,355,767 | |
| 17076 | Sinners | £ 266,520,161 | |
| 17077 | Sino Group | £ 12,519,472 | |
| 17078 | sins | £ 1,105,930,002 | |
| 17079 | sinsinattee | £ 77,807 | |
| 17080 | Sion | £ 45,276,606 | |
| 17081 | sip | £ 4,947,048 | |
| 17082 | SIPAPIAS | £ -5,901,721 | |
| 17083 | Sipledome | £ -8,748,379 | |
| 17084 | Sipral | £ 5,507,397 | |
| 17085 | sips co | £ 5,109,034 | |
| 17086 | Sir Humphry | £ 149,679,071 | |
| 17087 | Siren | £ 17,058,704 | |
| 17088 | Sirfound inc | £ -9,263 | |
| 17089 | Sirfound inc2 | £ -3,544 | |
| 17090 | sister | £ 562,523,191 | |
| 17091 | Sisters | £ 47,242,309 | |
| 17092 | Sisyphean | £ 48,163,924 | |
| 17093 | Sisyphus | £ 5,368,376 | |
| 17094 | Sithis | £ 235,713 | |
| 17095 | Sitwel Ent. | £ 13,506,917 | |
| 17096 | Six Feet Under Ltd | £ -1,091,275 | |
| 17097 | Six More | £ 248,598,527 | |
| 17098 | Six Sigma | £ 435,500,126 | |
| 17099 | Sixes | £ 116,651,618 | |
| 17100 | Sixpence None The Richer | £ 590,722,080 | |
