The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 19701 | Sim City3 | £ 2,672,113 | |
| 19702 | SimCity | £ 52,080,751 | |
| 19703 | Simcoe County | £ 5,557,781 | |
| 19704 | SimEarth | £ 30,284,784 | |
| 19705 | Simon Cowells posterior | £ 240,514,908 | |
| 19706 | Simon Fraser University | £ 119,553,446 | |
| 19707 | Simon The Sprout | £ 392,953,118 | |
| 19708 | Simple | £ 199,139,466 | |
| 19709 | Simple Inc. | £ 161,992,874 | |
| 19710 | Simple Things | £ 55,697,089 | |
| 19711 | simple things in life | £ -150,921 | |
| 19712 | Simpleton Co. | £ 154,696,172 | |
| 19713 | Simplicity | £ 73,991,816 | |
| 19714 | Simply Caesar | £ 95,974,460 | |
| 19715 | simply does it | £ 16,297,060 | |
| 19716 | simply nuts | £ 3,357,807 | |
| 19717 | Simply Sane Products | £ 46,396,437 | |
| 19718 | Simply Subsidiary | £ 23,554,862 | |
| 19719 | simplysouthern | £ 404,043 | |
| 19720 | Sims Company | £ 69,553,563 | |
| 19721 | Simulation | £ 4,647,866 | |
| 19722 | Sin | £ 882,690,513 | |
| 19723 | Sin City | £ 92,965,888 | |
| 19724 | Sin Co | £ 617 | |
| 19725 | Sin Industries | £ 1,511,830 | |
| 19726 | Sin Sentido | £ 253,153,436 | |
| 19727 | Sinaloa | £ 560,805,016 | |
| 19728 | Sinaloa Cartel | £ 102,795,331 | |
| 19729 | Sinar | £ 23,890,113 | |
| 19730 | Sinatra Select | £ 636,672,700 | |
| 19731 | Sinbad the sailor | £ 214,550,415 | |
| 19732 | Since 1796 | £ 69,471,127 | |
| 19733 | Since Day One | £ 2,313,293,302 | |
| 19734 | sincity | £ 207,710,495 | |
| 19735 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 19736 | Sindar | £ 5,505,299 | |
| 19737 | SINDATERA | £ 4,301,225 | |
| 19738 | Singani | £ 10,311,313,621 | |
| 19739 | Singapore | £ 453,579,334 | |
| 19740 | Singaporean Gang | £ 1,819,049,023 | |
| 19741 | Singapura | £ 51,209,029 | |
| 19742 | Singh | £ 10,715,804 | |
| 19743 | singham inc | £ 10,963,284 | |
| 19744 | SinghLTD2 | £ 10,446,400 | |
| 19745 | Single Barrel | £ 988,439,929 | |
| 19746 | Single Malt | £ 16,426,947 | |
| 19747 | Single Moms | £ 54,179,425 | |
| 19748 | Sinic Leccy Co | £ 477,855,468 | |
| 19749 | Sinister | £ 1,271,414 | |
| 19750 | Sinister Minister | £ 1,142,258,047 | |
| 19751 | Sink Ships | £ 269,509,457 | |
| 19752 | Sinkain INC | £ 1,959,845 | |
| 19753 | Sinking Ships | £ 81,355,767 | |
| 19754 | Sinners | £ 338,520,161 | |
| 19755 | Sino Group | £ 77,219,512 | |
| 19756 | sins | £ 1,105,930,002 | |
| 19757 | Sioux | £ 2,155,911 | |
| 19758 | sip | £ 4,947,048 | |
| 19759 | SIPAPIAS | £ -5,901,721 | |
| 19760 | Sipledome | £ -8,748,379 | |
| 19761 | Sipral | £ 5,507,397 | |
| 19762 | sips co | £ 5,109,034 | |
| 19763 | Sir Humphry | £ 491,344,886 | |
| 19764 | Siren | £ 17,058,704 | |
| 19765 | Sirfound inc | £ -9,263 | |
| 19766 | Sirfound inc2 | £ -3,544 | |
| 19767 | sirius co.uk | £ 507,524,587 | |
| 19768 | Sisko | £ 50,000 | |
| 19769 | sister | £ 562,523,191 | |
| 19770 | Sister Sage | £ -4,405,048 | |
| 19771 | Sisters | £ 47,242,309 | |
| 19772 | Sisyphean | £ 48,163,924 | |
| 19773 | Sisyphus | £ 5,393,053 | |
| 19774 | Sit back | £ 979,030,798 | |
| 19775 | Sithis | £ 235,713 | |
| 19776 | Situational Ethics | £ 150,870,320 | |
| 19777 | Sitwel Ent. | £ 13,506,917 | |
| 19778 | Six Feet Under Ltd | £ -1,091,275 | |
| 19779 | Six More | £ 248,598,527 | |
| 19780 | Six Sigma | £ 999,824,184 | |
| 19781 | Sixpence None The Richer | £ 590,722,080 | |
| 19782 | Sixteen Tons | £ 16,844,742 | |
| 19783 | Sixteen Vestal Virgins | £ 121,263,981 | |
| 19784 | sixteenth sixes | £ 106,519,795 | |
| 19785 | sixth army | £ 114,993,130 | |
| 19786 | Sixty Nine | £ 341,328,441 | |
| 19787 | Size | £ 1,820,983 | |
| 19788 | size 13s | £ 381,955,715 | |
| 19789 | SJA | £ 40,568,528 | |
| 19790 | SK1 | £ 87,390,278 | |
| 19791 | SK1 Elite | £ 120,651,100 | |
| 19792 | SK1N | £ -5,430 | |
| 19793 | SK2 | £ 86,097,057 | |
| 19794 | SK3 | £ 69,708,527 | |
| 19795 | Skadegamutc | £ 102,163,417 | |
| 19796 | SkaDouche | £ 5,505,074 | |
| 19797 | Skank | £ 23,429,613 | |
| 19798 | skanky co | £ 50,000 | |
| 19799 | Skarface Inc. | £ 4,262,037 | |
| 19800 | Skarphace Inc. | £ -2,447,925 | |
