The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 17801 | Sigma | £ 69,225,770 | |
| 17802 | Sigma Industries | £ 17,556 | |
| 17803 | Sigma-957 | £ 56,676,770 | |
| 17804 | Sigma-Aldrich | £ 4,222,156,882 | |
| 17805 | Sign | £ 51,894,494 | |
| 17806 | Signals | £ 333,485,470 | |
| 17807 | Silat | £ 224,852,851 | |
| 17808 | Silence | £ 74,087,778 | |
| 17809 | silent assassin | £ 1,250,769 | |
| 17810 | Silent Contractors | £ 50,000 | |
| 17811 | Silent Inc. | £ 286,365,315 | |
| 17812 | Silent Stalker | £ 1,059,795 | |
| 17813 | Silent_Whisper | £ 189,456,569 | |
| 17814 | Silica Gel | £ 416,330,491 | |
| 17815 | Silk Boxers | £ 79,929,679 | |
| 17816 | Silly Sausage | £ 3,073,677 | |
| 17817 | Silly Sock Emporium | £ 43,037,350 | |
| 17818 | Silly Walks | £ 8,973,455 | |
| 17819 | SillyPutty | £ 39,214,929 | |
| 17820 | Silmarils Inc | £ 5,502,423 | |
| 17821 | Siloporten | £ 6,969,503 | |
| 17822 | silva | £ 36,054,742 | |
| 17823 | Silver | £ 1,180,220,963 | |
| 17824 | Silver Aftershock | £ 56,640,118 | |
| 17825 | Silver Haze | £ 320,165,501 | |
| 17826 | Silver Inc | £ 10,197,661 | |
| 17827 | Silver Plated Netrobucks | £ 169,274,529 | |
| 17828 | Silver Shamrock Inc | £ 2,317,866 | |
| 17829 | Silver Spoon Cafe | £ 199,625,313 | |
| 17830 | Silver Surfer | £ 761,121,606 | |
| 17831 | Silver Wings | £ 1,381,690,294 | |
| 17832 | Silverdale St | £ 30,471,547 | |
| 17833 | Silvermoon Enterprises | £ -214,855 | |
| 17834 | Silvertide Enterprises | £ -1,627,976 | |
| 17835 | silvra | £ 54,285,205 | |
| 17836 | Sim City3 | £ 2,672,113 | |
| 17837 | Simcoe County | £ 5,557,781 | |
| 17838 | Simon Cowells posterior | £ 240,514,908 | |
| 17839 | Simon Fraser University | £ 119,553,446 | |
| 17840 | Simon The Sprout | £ 392,953,118 | |
| 17841 | Simple | £ 199,139,466 | |
| 17842 | Simple Inc. | £ 161,992,874 | |
| 17843 | Simple Things | £ 55,697,089 | |
| 17844 | simple things in life | £ -150,921 | |
| 17845 | Simpleton Co. | £ 154,696,172 | |
| 17846 | Simplicity | £ 73,991,816 | |
| 17847 | Simply Caesar | £ 95,974,460 | |
| 17848 | simply does it | £ 16,297,060 | |
| 17849 | simply nuts | £ 3,357,807 | |
| 17850 | Simply Sane Products | £ 46,396,437 | |
| 17851 | Simply Subsidiary | £ 23,554,862 | |
| 17852 | simplysouthern | £ 404,043 | |
| 17853 | Sims Company | £ 69,553,563 | |
| 17854 | Simulation | £ 4,647,866 | |
| 17855 | Sin | £ 882,690,513 | |
| 17856 | Sin City | £ 92,965,888 | |
| 17857 | Sin Co | £ 617 | |
| 17858 | Sin Industries | £ 1,511,830 | |
| 17859 | Sin Sentido | £ 253,153,436 | |
| 17860 | Sinaloa | £ 485,909,865 | |
| 17861 | Sinaloa Cartel | £ 102,795,331 | |
| 17862 | Sinar | £ 41,508,691 | |
| 17863 | Sinatra Select | £ 636,672,700 | |
| 17864 | Sinbad the sailor | £ 214,550,415 | |
| 17865 | Since Day Five | £ 2,948,115,072 | |
| 17866 | Since Day four | £ 1,582,450,594 | |
| 17867 | Since Day One | £ 2,293,425,613 | |
| 17868 | Since Day Three | £ 321,438,655 | |
| 17869 | Since Day two | £ 955,774,076 | |
| 17870 | sincity | £ 207,710,495 | |
| 17871 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 17872 | Sindar | £ 5,505,299 | |
| 17873 | SINDATERA | £ 4,301,225 | |
| 17874 | Singani | £ 10,311,313,621 | |
| 17875 | Singapore | £ 453,579,334 | |
| 17876 | Singapura | £ 51,209,029 | |
| 17877 | Singh | £ 10,715,804 | |
| 17878 | singham inc | £ 10,963,284 | |
| 17879 | SinghLTD2 | £ 10,446,400 | |
| 17880 | Single Barrel | £ 988,439,929 | |
| 17881 | Single Malt | £ 16,426,947 | |
| 17882 | Single Moms | £ 73,462,998 | |
| 17883 | Sinic Leccy Co | £ 477,855,468 | |
| 17884 | Sinister | £ 1,271,414 | |
| 17885 | Sinister Minister | £ 1,139,052,839 | |
| 17886 | Sink Ships | £ 269,509,457 | |
| 17887 | Sinkain INC | £ 1,959,845 | |
| 17888 | Sinking Ships | £ 81,355,767 | |
| 17889 | Sinners | £ 338,520,161 | |
| 17890 | Sino Group | £ 66,211,223 | |
| 17891 | sins | £ 1,105,930,002 | |
| 17892 | sip | £ 4,947,048 | |
| 17893 | SIPAPIAS | £ -5,901,721 | |
| 17894 | Sipledome | £ -8,748,379 | |
| 17895 | Sipral | £ 5,507,397 | |
| 17896 | sips co | £ 5,109,034 | |
| 17897 | Sir Humphry | £ 491,344,886 | |
| 17898 | Siren | £ 17,058,704 | |
| 17899 | Sirfound inc | £ -9,263 | |
| 17900 | Sirfound inc2 | £ -3,544 | |
