The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 18601 | Sids Emporium | £ 15,032,548 | |
| 18602 | Sieber | £ 50,000 | |
| 18603 | Sierra Leone | £ 107,822,248 | |
| 18604 | Sifosed Enterprises | £ 25,255 | |
| 18605 | Sift co | £ -137,410 | |
| 18606 | SIG Sauer | £ 51,238,462 | |
| 18607 | Sight | £ 200,734,160 | |
| 18608 | sightings | £ 3,288,362 | |
| 18609 | Sigma | £ 69,225,770 | |
| 18610 | Sigma Industries | £ 17,556 | |
| 18611 | Sigma-957 | £ 56,676,770 | |
| 18612 | Sigma-Aldrich | £ 4,582,104,682 | |
| 18613 | Sign | £ 51,894,494 | |
| 18614 | sign my petition | £ 2,632,257 | |
| 18615 | Signals | £ 350,945,981 | |
| 18616 | Silat | £ 224,852,851 | |
| 18617 | Silence | £ 22,563,076 | |
| 18618 | silent assassin | £ 1,250,769 | |
| 18619 | Silent Contractors | £ 50,000 | |
| 18620 | Silent Echo Inc. | £ 1,374,168 | |
| 18621 | Silent Inc. | £ 286,365,315 | |
| 18622 | Silent Predator | £ -3,711,093 | |
| 18623 | Silent Stalker | £ 1,059,795 | |
| 18624 | Silent Stalkers | £ 5,382,002 | |
| 18625 | Silent Synd. | £ 4,432,208 | |
| 18626 | Silent Thoughts | £ 3,469,812 | |
| 18627 | Silent_Whisper | £ 189,456,569 | |
| 18628 | Silica Gel | £ 416,330,491 | |
| 18629 | Silk Boxers | £ 79,929,679 | |
| 18630 | Silly Sausage | £ 94,918,923 | |
| 18631 | Silly Sock Emporium | £ 33,515,879 | |
| 18632 | Silly Walks | £ 8,973,455 | |
| 18633 | SillyPutty | £ 39,214,929 | |
| 18634 | Silmarils Inc | £ 5,502,423 | |
| 18635 | Siloporten | £ 6,969,503 | |
| 18636 | silva | £ 36,054,742 | |
| 18637 | Silver | £ 1,180,220,963 | |
| 18638 | Silver Aftershock | £ 56,640,118 | |
| 18639 | Silver Haze | £ 320,165,501 | |
| 18640 | Silver Inc | £ 10,197,661 | |
| 18641 | Silver Plated Netrobucks | £ 169,274,529 | |
| 18642 | Silver Pot | £ 48,640,403 | |
| 18643 | Silver Shamrock Inc | £ 2,317,866 | |
| 18644 | Silver Spoon Cafe | £ 353,335,268 | |
| 18645 | Silver Surfer | £ 761,084,894 | |
| 18646 | Silver Wings | £ 1,381,690,294 | |
| 18647 | Silverdale St | £ 30,471,547 | |
| 18648 | Silvermoon Enterprises | £ -214,855 | |
| 18649 | Silvertide Enterprises | £ -1,627,976 | |
| 18650 | silvra | £ 54,285,205 | |
| 18651 | Sim City3 | £ 2,672,113 | |
| 18652 | Simcoe County | £ 5,557,781 | |
| 18653 | Simon Cowells posterior | £ 240,514,908 | |
| 18654 | Simon Fraser University | £ 119,553,446 | |
| 18655 | Simon The Sprout | £ 392,953,118 | |
| 18656 | Simple | £ 199,139,466 | |
| 18657 | Simple Inc. | £ 161,992,874 | |
| 18658 | Simple Moments | £ 3,449,314 | |
| 18659 | Simple Things | £ 55,697,089 | |
| 18660 | simple things in life | £ -150,921 | |
| 18661 | Simpleton Co. | £ 154,696,172 | |
| 18662 | Simplicity | £ 73,991,816 | |
| 18663 | Simply Caesar | £ 95,974,460 | |
| 18664 | simply does it | £ 16,297,060 | |
| 18665 | simply nuts | £ 3,357,807 | |
| 18666 | Simply Sane Products | £ 46,396,437 | |
| 18667 | Simply Subsidiary | £ 23,554,862 | |
| 18668 | simplysouthern | £ 404,043 | |
| 18669 | Sims Company | £ 69,553,563 | |
| 18670 | Simulation | £ 4,647,866 | |
| 18671 | Sin | £ 882,690,513 | |
| 18672 | Sin City | £ 92,965,888 | |
| 18673 | Sin Co | £ 617 | |
| 18674 | Sin Industries | £ 1,511,830 | |
| 18675 | Sin Sentido | £ 253,153,436 | |
| 18676 | Sinaloa | £ 485,295,128 | |
| 18677 | Sinaloa Cartel | £ 102,795,331 | |
| 18678 | Sinar | £ 36,495,241 | |
| 18679 | Sinatra Select | £ 636,672,700 | |
| 18680 | Sinbad the sailor | £ 214,550,415 | |
| 18681 | Since 1796 | £ 22,846,942 | |
| 18682 | Since Day Five | £ 2,948,115,072 | |
| 18683 | Since Day four | £ 1,582,450,594 | |
| 18684 | Since Day One | £ 2,293,425,613 | |
| 18685 | Since Day Three | £ 321,438,655 | |
| 18686 | Since Day two | £ 955,774,076 | |
| 18687 | sincity | £ 207,710,495 | |
| 18688 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 18689 | Sindar | £ 5,505,299 | |
| 18690 | SINDATERA | £ 4,301,225 | |
| 18691 | Singani | £ 10,311,313,621 | |
| 18692 | Singapore | £ 453,579,334 | |
| 18693 | Singapura | £ 51,209,029 | |
| 18694 | Singh | £ 10,715,804 | |
| 18695 | singham inc | £ 10,963,284 | |
| 18696 | SinghLTD2 | £ 10,446,400 | |
| 18697 | Single Barrel | £ 988,439,929 | |
| 18698 | Single Malt | £ 16,426,947 | |
| 18699 | Single Moms | £ 54,090,610 | |
| 18700 | Sinic Leccy Co | £ 477,855,468 | |
