The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 15001 | Sick on a Widow | £ 145,081,811 | |
| 15002 | Sickness | £ -10,078,045 | |
| 15003 | Sickoz Company | £ 785,865,218 | |
| 15004 | sid | £ 6,387,889 | |
| 15005 | Sid The Sexist | £ 11,083,450 | |
| 15006 | Sidders85 inc | £ 50,000 | |
| 15007 | Side Pony | £ 191,337,989 | |
| 15008 | SideLineD | £ 3,552,075 | |
| 15009 | Sidewinder | £ 207,797,344 | |
| 15010 | Sidney inc | £ 50,000 | |
| 15011 | Sids Emporium | £ 15,032,548 | |
| 15012 | Sieber | £ 50,000 | |
| 15013 | Sifosed Enterprises | £ 25,255 | |
| 15014 | Sift co | £ -137,410 | |
| 15015 | Sighs | £ 9,874,626 | |
| 15016 | Sight | £ 200,734,160 | |
| 15017 | Sigma Industries | £ 17,556 | |
| 15018 | Sigma-957 | £ 56,676,770 | |
| 15019 | Sigma-Aldrich | £ 9,845,479 | |
| 15020 | Sign | £ 51,894,494 | |
| 15021 | Silat | £ 126,598,241 | |
| 15022 | Silence | £ 38,301,415 | |
| 15023 | silent assassin | £ 1,250,769 | |
| 15024 | Silent Inc. | £ 286,365,315 | |
| 15025 | Silent Stalker | £ 1,059,795 | |
| 15026 | Silent_Whisper | £ 189,456,569 | |
| 15027 | Silica Gel | £ 416,330,491 | |
| 15028 | Silk Boxers | £ 79,929,679 | |
| 15029 | Silly Walks | £ 8,973,455 | |
| 15030 | SillyPutty | £ 39,214,929 | |
| 15031 | Siloporten | £ 6,969,503 | |
| 15032 | silva | £ 36,054,742 | |
| 15033 | Silver | £ 1,180,244,063 | |
| 15034 | Silver Aftershock | £ 56,640,118 | |
| 15035 | Silver Haze | £ 286,306,148 | |
| 15036 | Silver Inc | £ 10,197,661 | |
| 15037 | Silver Plated Netrobucks | £ 168,199,969 | |
| 15038 | Silver Shamrock Inc | £ 2,317,866 | |
| 15039 | Silver Surfer | £ 448,468,425 | |
| 15040 | Silver Wings | £ 1,381,690,294 | |
| 15041 | Silverdale St | £ 30,471,547 | |
| 15042 | Silvermoon Enterprises | £ -214,855 | |
| 15043 | Silvertide Enterprises | £ -1,627,976 | |
| 15044 | silvra | £ 54,285,205 | |
| 15045 | Sim City3 | £ 2,672,113 | |
| 15046 | Simon Cowells posterior | £ 240,514,908 | |
| 15047 | Simon Fraser University | £ 119,553,446 | |
| 15048 | Simon The Sprout | £ 330,123,888 | |
| 15049 | Simple | £ 199,139,466 | |
| 15050 | Simple Inc. | £ 161,992,874 | |
| 15051 | Simple Things | £ 55,697,089 | |
| 15052 | simple things in life | £ -150,921 | |
| 15053 | SimpleS | £ 45,372,564 | |
| 15054 | Simpleton Co. | £ 154,696,172 | |
| 15055 | Simplicity | £ 73,991,816 | |
| 15056 | simply does it | £ 16,297,060 | |
| 15057 | simply nuts | £ 3,357,807 | |
| 15058 | Simply Sane Products | £ 46,396,437 | |
| 15059 | simplysouthern | £ 404,043 | |
| 15060 | Simulation | £ 4,647,866 | |
| 15061 | Sin | £ 882,690,513 | |
| 15062 | Sin City | £ 69,323,763 | |
| 15063 | Sin Co | £ 617 | |
| 15064 | Sin Sentido | £ 253,153,436 | |
| 15065 | Sinaloa | £ 225,298,463 | |
| 15066 | Sinatra Select | £ 355,137,784 | |
| 15067 | Sinbad the sailor | £ 214,550,415 | |
| 15068 | Since Day 1 | £ 61,665,725 | |
| 15069 | Since Day Five | £ 558,135,740 | |
| 15070 | Since Day four | £ 1,119,317,117 | |
| 15071 | Since Day One | £ 655,348,738 | |
| 15072 | Since Day Three | £ 249,188,209 | |
| 15073 | Since Day two | £ 387,020,148 | |
| 15074 | sincity | £ 207,710,495 | |
| 15075 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 15076 | Sindar | £ 5,505,299 | |
| 15077 | Singani | £ 10,311,068,262 | |
| 15078 | Singapore | £ 453,579,334 | |
| 15079 | Singapore Garden | £ 645,451,437 | |
| 15080 | singham inc | £ 10,963,284 | |
| 15081 | SinghLTD2 | £ 10,446,400 | |
| 15082 | Single Barrel | £ 742,395,896 | |
| 15083 | Single Malt | £ 16,426,947 | |
| 15084 | Single Moms | £ 304,644,158 | |
| 15085 | Sinic Leccy Co | £ 477,855,468 | |
| 15086 | Sinister | £ 1,271,414 | |
| 15087 | Sink | £ 2,232,154 | |
| 15088 | Sink Ships | £ 269,509,457 | |
| 15089 | Sinkain INC | £ 1,929,856 | |
| 15090 | Sinking Ships | £ 81,355,767 | |
| 15091 | sins | £ 1,105,930,002 | |
| 15092 | sinsinattee | £ 77,807 | |
| 15093 | Sion | £ 45,276,606 | |
| 15094 | sip | £ 4,947,048 | |
| 15095 | SIPAPIAS | £ -5,901,721 | |
| 15096 | Sipledome | £ -8,748,379 | |
| 15097 | sips co | £ 5,109,034 | |
| 15098 | Siren | £ 17,058,704 | |
| 15099 | sister | £ 425,843,483 | |
| 15100 | Sisters | £ 47,242,309 | |
