The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 19801 | sid barrat | £ 847,983,690 | |
| 19802 | Sid The Sexist | £ 11,083,450 | |
| 19803 | Sidders85 inc | £ 50,000 | |
| 19804 | Side Hustle | £ 97,734,189 | |
| 19805 | side of the tracks | £ 50,000 | |
| 19806 | Side Pony | £ 191,337,989 | |
| 19807 | SideLineD | £ 3,552,075 | |
| 19808 | Sidewinder | £ 227,297,344 | |
| 19809 | Sidewinder Missle | £ 723,801,543 | |
| 19810 | Sidney inc | £ 50,000 | |
| 19811 | Sids Emporium | £ 15,032,548 | |
| 19812 | Sieber | £ 50,000 | |
| 19813 | Sierra Leone | £ 529,322,248 | |
| 19814 | Sifosed Enterprises | £ 25,255 | |
| 19815 | Sift co | £ -137,410 | |
| 19816 | SIG Sauer | £ 51,238,462 | |
| 19817 | Sight | £ 200,734,160 | |
| 19818 | sightings | £ 41,922,596 | |
| 19819 | Sigma | £ 69,225,770 | |
| 19820 | Sigma Industries | £ 17,556 | |
| 19821 | Sigma-957 | £ 56,676,770 | |
| 19822 | Sigma-Aldrich | £ 5,008,045,282 | |
| 19823 | Sign | £ 51,894,494 | |
| 19824 | Signals | £ 445,149,849 | |
| 19825 | Silat | £ 224,852,851 | |
| 19826 | Silence | £ 22,563,076 | |
| 19827 | silent assassin | £ 1,250,769 | |
| 19828 | Silent Contractors | £ 50,000 | |
| 19829 | Silent Echo Inc. | £ 57,693,983 | |
| 19830 | Silent Inc. | £ 286,365,315 | |
| 19831 | Silent Predator | £ -3,711,093 | |
| 19832 | Silent Stalker | £ 1,059,795 | |
| 19833 | Silent Stalkers | £ 5,382,002 | |
| 19834 | Silent Synd. | £ 4,432,208 | |
| 19835 | Silent Thoughts | £ 7,276,995 | |
| 19836 | Silent_Whisper | £ 189,456,569 | |
| 19837 | Silica Gel | £ 416,330,491 | |
| 19838 | Silk Boxers | £ 79,929,679 | |
| 19839 | Silly Sausage | £ 656,236,738 | |
| 19840 | Silly Sock Emporium | £ 20,474,056 | |
| 19841 | Silly Walks | £ 8,973,455 | |
| 19842 | SillyPutty | £ 39,214,929 | |
| 19843 | Silmarils Inc | £ 5,502,423 | |
| 19844 | Siloporten | £ 6,969,503 | |
| 19845 | silva | £ 36,054,742 | |
| 19846 | Silver | £ 1,180,220,963 | |
| 19847 | Silver Aftershock | £ 56,640,118 | |
| 19848 | Silver Haze | £ 320,165,501 | |
| 19849 | Silver Inc | £ 10,197,661 | |
| 19850 | Silver Lantern | £ 50,000 | |
| 19851 | Silver Plated Netrobucks | £ 169,274,529 | |
| 19852 | Silver Pot | £ 54,007,065 | |
| 19853 | Silver Shamrock Inc | £ 2,317,866 | |
| 19854 | Silver Spoon Cafe | £ 769,991,994 | |
| 19855 | Silver Surfer | £ 761,444,170 | |
| 19856 | Silver Wings | £ 1,381,690,294 | |
| 19857 | Silverdale St | £ 30,471,547 | |
| 19858 | Silvermoon Enterprises | £ -214,855 | |
| 19859 | Silvertide Enterprises | £ -1,627,976 | |
| 19860 | silvra | £ 54,285,205 | |
| 19861 | Sim City3 | £ 2,672,113 | |
| 19862 | SimCity | £ 83,369,464 | |
| 19863 | Simcoe County | £ 5,557,781 | |
| 19864 | SimEarth | £ 27,854,072 | |
| 19865 | Simon Cowells posterior | £ 240,514,908 | |
| 19866 | Simon Fraser University | £ 119,553,446 | |
| 19867 | Simon The Sprout | £ 392,953,118 | |
| 19868 | Simple | £ 199,139,466 | |
| 19869 | Simple Inc. | £ 161,992,874 | |
| 19870 | Simple Things | £ 55,697,089 | |
| 19871 | simple things in life | £ -150,921 | |
| 19872 | Simpleton Co. | £ 154,696,172 | |
| 19873 | Simplicity | £ 73,991,816 | |
| 19874 | Simply Caesar | £ 95,974,460 | |
| 19875 | simply does it | £ 16,297,060 | |
| 19876 | simply nuts | £ 3,357,807 | |
| 19877 | Simply Sane Products | £ 46,396,437 | |
| 19878 | Simply Subsidiary | £ 23,554,862 | |
| 19879 | simplysouthern | £ 404,043 | |
| 19880 | Sims Company | £ 69,553,563 | |
| 19881 | Simulation | £ 4,647,866 | |
| 19882 | Sin | £ 882,690,513 | |
| 19883 | Sin City | £ 92,965,888 | |
| 19884 | Sin Co | £ 617 | |
| 19885 | Sin Industries | £ 1,511,830 | |
| 19886 | Sin Sentido | £ 253,153,436 | |
| 19887 | Sinaloa | £ 561,574,899 | |
| 19888 | Sinaloa Cartel | £ 102,795,331 | |
| 19889 | Sinar | £ 61,971,133 | |
| 19890 | Sinatra Select | £ 636,672,700 | |
| 19891 | Sinbad the sailor | £ 214,550,415 | |
| 19892 | Since 1796 | £ 69,471,127 | |
| 19893 | Since Day One | £ 2,323,817,390 | |
| 19894 | sincity | £ 207,710,495 | |
| 19895 | Sinclair | £ 2,627,576 | |
| 19896 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 19897 | Sindar | £ 5,505,299 | |
| 19898 | SINDATERA | £ 4,301,225 | |
| 19899 | Singani | £ 10,311,313,621 | |
| 19900 | Singapore | £ 453,579,334 | |
