The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 18201 | Silica Gel | £ 416,330,491 | |
| 18202 | Silicon Valley | £ 554,046,104 | |
| 18203 | Silk Boxers | £ 79,929,679 | |
| 18204 | Silly Little Billy | £ 5,505,065 | |
| 18205 | Silly Walks | £ 8,973,455 | |
| 18206 | SillyPutty | £ 39,214,929 | |
| 18207 | Silmarils Inc | £ 5,502,423 | |
| 18208 | Siloporten | £ 6,969,503 | |
| 18209 | silva | £ 36,054,742 | |
| 18210 | Silver | £ 1,180,244,063 | |
| 18211 | Silver Aftershock | £ 56,640,118 | |
| 18212 | Silver Haze | £ 320,165,501 | |
| 18213 | Silver Inc | £ 10,197,661 | |
| 18214 | Silver Moon | £ 6,739,153 | |
| 18215 | Silver Plated Netrobucks | £ 169,274,529 | |
| 18216 | Silver Shamrock Inc | £ 2,317,866 | |
| 18217 | Silver Spoon Cafe | £ 49,857,125 | |
| 18218 | Silver Surfer | £ 736,343,153 | |
| 18219 | Silver Wings | £ 1,381,690,294 | |
| 18220 | Silverdale St | £ 30,471,547 | |
| 18221 | Silvermoon Enterprises | £ -214,855 | |
| 18222 | Silvertide Enterprises | £ -1,627,976 | |
| 18223 | silvra | £ 54,285,205 | |
| 18224 | Sim City3 | £ 2,672,113 | |
| 18225 | Simcoe County | £ 5,557,781 | |
| 18226 | Simon Cowells posterior | £ 240,514,908 | |
| 18227 | Simon Fraser University | £ 119,553,446 | |
| 18228 | Simon The Sprout | £ 384,213,225 | |
| 18229 | Simple | £ 199,139,466 | |
| 18230 | Simple Inc. | £ 161,992,874 | |
| 18231 | Simple Jack | £ 37,921,307 | |
| 18232 | Simple Things | £ 55,697,089 | |
| 18233 | simple things in life | £ -150,921 | |
| 18234 | SimpleS | £ 45,372,564 | |
| 18235 | Simpleton Co. | £ 154,696,172 | |
| 18236 | Simplicity | £ 73,991,816 | |
| 18237 | Simply Caesar | £ 11,421,908 | |
| 18238 | simply does it | £ 16,297,060 | |
| 18239 | simply nuts | £ 3,357,807 | |
| 18240 | Simply Sane Products | £ 46,396,437 | |
| 18241 | simplysouthern | £ 404,043 | |
| 18242 | Simulation | £ 4,647,866 | |
| 18243 | Sin | £ 882,690,513 | |
| 18244 | Sin City | £ 92,965,888 | |
| 18245 | Sin Co | £ 617 | |
| 18246 | Sin Industries | £ 1,511,830 | |
| 18247 | Sin Sentido | £ 253,153,436 | |
| 18248 | Sinaloa | £ 317,048,614 | |
| 18249 | Sinatra Select | £ 636,672,700 | |
| 18250 | Sinbad the sailor | £ 214,550,415 | |
| 18251 | Since Day 1 | £ 61,665,725 | |
| 18252 | Since Day Five | £ 1,709,676,714 | |
| 18253 | Since Day four | £ 1,555,924,714 | |
| 18254 | Since Day One | £ 1,363,011,402 | |
| 18255 | Since Day Three | £ 15,438,655 | |
| 18256 | Since Day two | £ 132,114,950 | |
| 18257 | sincity | £ 207,710,495 | |
| 18258 | Sinclair Girnigoe | £ 1,133,668,388 | |
| 18259 | Sindar | £ 5,505,299 | |
| 18260 | Singani | £ 10,311,313,621 | |
| 18261 | Singapore | £ 453,579,334 | |
| 18262 | Singh | £ 3,800,012 | |
| 18263 | singham inc | £ 10,963,284 | |
| 18264 | SinghLTD2 | £ 10,446,400 | |
| 18265 | Single Barrel | £ 988,439,929 | |
| 18266 | Single Malt | £ 16,426,947 | |
| 18267 | Single Moms | £ 47,379,417 | |
| 18268 | Sinic Leccy Co | £ 477,855,468 | |
| 18269 | Sinister | £ 1,271,414 | |
| 18270 | Sinister Minister | £ 960,934,058 | |
| 18271 | Sink | £ 2,232,154 | |
| 18272 | Sink Ships | £ 269,509,457 | |
| 18273 | Sinkain INC | £ 1,959,845 | |
| 18274 | Sinking Ships | £ 81,355,767 | |
| 18275 | Sinners | £ 338,520,161 | |
| 18276 | Sino Group | £ 61,509,472 | |
| 18277 | sins | £ 1,105,930,002 | |
| 18278 | sinsinattee | £ 77,807 | |
| 18279 | sip | £ 4,947,048 | |
| 18280 | SIPAPIAS | £ -5,901,721 | |
| 18281 | Sipledome | £ -8,748,379 | |
| 18282 | Sipral | £ 5,507,397 | |
| 18283 | sips co | £ 5,109,034 | |
| 18284 | Sir Humphry | £ 470,410,200 | |
| 18285 | Siren | £ 17,058,704 | |
| 18286 | Sirfound inc | £ -9,263 | |
| 18287 | Sirfound inc2 | £ -3,544 | |
| 18288 | sirius co.uk | £ 55,603,686 | |
| 18289 | sister | £ 562,523,191 | |
| 18290 | Sisters | £ 47,242,309 | |
| 18291 | Sisyphean | £ 48,163,924 | |
| 18292 | Sisyphus | £ 5,393,053 | |
| 18293 | Sithis | £ 235,713 | |
| 18294 | Situational Ethics | £ 5,515,682 | |
| 18295 | Sitwel Ent. | £ 13,506,917 | |
| 18296 | Six Feet Under Ltd | £ -1,091,275 | |
| 18297 | Six More | £ 248,598,527 | |
| 18298 | Six Sigma | £ 800,190,987 | |
| 18299 | Sixes | £ 116,651,618 | |
| 18300 | Sixpence None The Richer | £ 590,722,080 | |
