The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 19701 | sid barrat | £ 847,983,690 | |
| 19702 | Sid The Sexist | £ 11,083,450 | |
| 19703 | Sidders85 inc | £ 50,000 | |
| 19704 | Side Hustle | £ 97,734,189 | |
| 19705 | side of the tracks | £ 50,000 | |
| 19706 | Side Pony | £ 191,337,989 | |
| 19707 | SideLineD | £ 3,552,075 | |
| 19708 | Sidewinder | £ 227,297,344 | |
| 19709 | Sidewinder Missle | £ 744,737,430 | |
| 19710 | Sidney inc | £ 50,000 | |
| 19711 | Sids Emporium | £ 15,032,548 | |
| 19712 | Sieber | £ 50,000 | |
| 19713 | Sierra Leone | £ 493,322,248 | |
| 19714 | Sifosed Enterprises | £ 25,255 | |
| 19715 | Sift co | £ -137,410 | |
| 19716 | SIG Sauer | £ 51,238,462 | |
| 19717 | Sight | £ 200,734,160 | |
| 19718 | sightings | £ 41,922,596 | |
| 19719 | Sigma | £ 69,225,770 | |
| 19720 | Sigma Industries | £ 17,556 | |
| 19721 | Sigma-957 | £ 56,676,770 | |
| 19722 | Sigma-Aldrich | £ 4,966,047,082 | |
| 19723 | Sign | £ 51,894,494 | |
| 19724 | Signals | £ 442,402,841 | |
| 19725 | Silat | £ 224,852,851 | |
| 19726 | Silence | £ 22,563,076 | |
| 19727 | silent assassin | £ 1,250,769 | |
| 19728 | Silent Contractors | £ 50,000 | |
| 19729 | Silent Echo Inc. | £ 57,693,983 | |
| 19730 | Silent Inc. | £ 286,365,315 | |
| 19731 | Silent Predator | £ -3,711,093 | |
| 19732 | Silent Stalker | £ 1,059,795 | |
| 19733 | Silent Stalkers | £ 5,382,002 | |
| 19734 | Silent Synd. | £ 4,432,208 | |
| 19735 | Silent Thoughts | £ 7,276,995 | |
| 19736 | Silent_Whisper | £ 189,456,569 | |
| 19737 | Silica Gel | £ 416,330,491 | |
| 19738 | Silk Boxers | £ 79,929,679 | |
| 19739 | Silly Sausage | £ 645,816,260 | |
| 19740 | Silly Sock Emporium | £ 39,202,410 | |
| 19741 | Silly Walks | £ 8,973,455 | |
| 19742 | SillyPutty | £ 39,214,929 | |
| 19743 | Silmarils Inc | £ 5,502,423 | |
| 19744 | Siloporten | £ 6,969,503 | |
| 19745 | silva | £ 36,054,742 | |
| 19746 | Silver | £ 1,180,220,963 | |
| 19747 | Silver Aftershock | £ 56,640,118 | |
| 19748 | Silver Haze | £ 320,165,501 | |
| 19749 | Silver Inc | £ 10,197,661 | |
| 19750 | Silver Lantern | £ 50,000 | |
| 19751 | Silver Plated Netrobucks | £ 169,274,529 | |
| 19752 | Silver Pot | £ 51,978,033 | |
| 19753 | Silver Shamrock Inc | £ 2,317,866 | |
| 19754 | Silver Spoon Cafe | £ 733,991,994 | |
| 19755 | Silver Surfer | £ 761,343,567 | |
| 19756 | Silver Wings | £ 1,381,690,294 | |
| 19757 | Silverdale St | £ 30,471,547 | |
| 19758 | Silvermoon Enterprises | £ -214,855 | |
| 19759 | Silvertide Enterprises | £ -1,627,976 | |
| 19760 | silvra | £ 54,285,205 | |
| 19761 | Sim City3 | £ 2,672,113 | |
| 19762 | SimCity | £ 39,320,786 | |
| 19763 | Simcoe County | £ 5,557,781 | |
| 19764 | SimEarth | £ 45,327,090 | |
| 19765 | Simon Cowells posterior | £ 240,514,908 | |
| 19766 | Simon Fraser University | £ 119,553,446 | |
| 19767 | Simon The Sprout | £ 392,953,118 | |
| 19768 | Simple | £ 199,139,466 | |
| 19769 | Simple Inc. | £ 161,992,874 | |
| 19770 | Simple Things | £ 55,697,089 | |
| 19771 | simple things in life | £ -150,921 | |
| 19772 | Simpleton Co. | £ 154,696,172 | |
| 19773 | Simplicity | £ 73,991,816 | |
| 19774 | Simply Caesar | £ 95,974,460 | |
| 19775 | simply does it | £ 16,297,060 | |
| 19776 | simply nuts | £ 3,357,807 | |
| 19777 | Simply Sane Products | £ 46,396,437 | |
| 19778 | Simply Subsidiary | £ 23,554,862 | |
| 19779 | simplysouthern | £ 404,043 | |
| 19780 | Sims Company | £ 69,553,563 | |
| 19781 | Simulation | £ 4,647,866 | |
| 19782 | Sin | £ 882,690,513 | |
| 19783 | Sin City | £ 92,965,888 | |
| 19784 | Sin Co | £ 617 | |
| 19785 | Sin Industries | £ 1,511,830 | |
| 19786 | Sin Sentido | £ 253,153,436 | |
| 19787 | Sinaloa | £ 558,707,007 | |
| 19788 | Sinaloa Cartel | £ 102,795,331 | |
| 19789 | Sinar | £ 123,890,113 | |
| 19790 | Sinatra Select | £ 636,672,700 | |
| 19791 | Sinbad the sailor | £ 214,550,415 | |
| 19792 | Since 1796 | £ 69,471,127 | |
| 19793 | Since Day One | £ 2,313,293,302 | |
| 19794 | sincity | £ 207,710,495 | |
| 19795 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 19796 | Sindar | £ 5,505,299 | |
| 19797 | SINDATERA | £ 4,301,225 | |
| 19798 | Singani | £ 10,311,313,621 | |
| 19799 | Singapore | £ 453,579,334 | |
| 19800 | Singaporean Gang | £ 1,711,049,023 | |
