The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12201 | Missiles Incorporated | £ 1,859,206 | |
| 12202 | missing a toe | £ 93,592,827 | |
| 12203 | Mission | £ 166,801,144 | |
| 12204 | Mission Survive | £ 114,950,288 | |
| 12205 | Missionary | £ 53,741,069 | |
| 12206 | Mississippi | £ 5,500,599 | |
| 12207 | Mississippi Burning | £ 47,665,328 | |
| 12208 | Mississippi Dreams | £ 269,344,047 | |
| 12209 | Mississippi Inc | £ 5,281,962 | |
| 12210 | MississippiMusic | £ 2,811,899 | |
| 12211 | MISSOURI | £ 1,148,314,366 | |
| 12212 | Missyxx | £ 50,000 | |
| 12213 | Mistake | £ 1,937,719,857 | |
| 12214 | Mistake Not | £ 4,245,817,468 | |
| 12215 | Mistaken Identity | £ 109,775,714 | |
| 12216 | mistaken yidentit | £ 20,847,058 | |
| 12217 | Mistakes | £ 24,462,673 | |
| 12218 | mister | £ 15,343,639 | |
| 12219 | Mister Mister | £ 25,037,060 | |
| 12220 | Mistree | £ 50,000 | |
| 12221 | Mitchell Ltd | £ -2,115,101 | |
| 12222 | Mitchell Ltd2 | £ -1,529,234 | |
| 12223 | Mitchell Ltd3 | £ 5,496,523 | |
| 12224 | Mitchell Ltd4 | £ 4,625,817 | |
| 12225 | Mitigating Circumstances | £ 162,513,039 | |
| 12226 | Mitres | £ 684,354,522 | |
| 12227 | mix | £ 11,825,750 | |
| 12228 | Mixture | £ 34,126,543 | |
| 12229 | Mizuko Holdings | £ 50,000 | |
| 12230 | MJHCo. | £ 81,836,520 | |
| 12231 | MJI | £ 5,141,163 | |
| 12232 | MJII | £ 1,514,759 | |
| 12233 | MJIII | £ 1,341,503 | |
| 12234 | MJIV | £ 334,370 | |
| 12235 | MJLee | £ 12,045,209 | |
| 12236 | MJM 2 | £ 50,000 | |
| 12237 | MJM Games | £ 921,860 | |
| 12238 | Mjolnir | £ 6,521,747,070 | |
| 12239 | MK II | £ -371,982 | |
| 12240 | MK Ultra | £ -17,913,353 | |
| 12241 | MKL | £ 4,220,322,350 | |
| 12242 | mkyumku | £ 1,322,486 | |
| 12243 | mlawenterprise | £ 206,267,702 | |
| 12244 | mlawenterprises | £ 74,433,740 | |
| 12245 | MLM | £ 5,969,284,608 | |
| 12246 | MLM Group | £ 85,259,170 | |
| 12247 | MMI | £ 3,194,811 | |
| 12248 | MMI Holdings | £ 2,450,207 | |
| 12249 | MMI2 | £ 4,617,014 | |
| 12250 | MMI3 | £ 161,241 | |
| 12251 | mmmHHHMmm | £ 1,268,288 | |
| 12252 | MMMM CAKE | £ 11,700,419 | |
| 12253 | MMORPG | £ 386,202,529 | |
| 12254 | MMS | £ 728,736 | |
| 12255 | MN Painting | £ 69,865,838 | |
| 12256 | mnb | £ 5,869,704 | |
| 12257 | MNGA | £ -591,189 | |
| 12258 | Mnv | £ 69,523,625 | |
| 12259 | Mo Alba | £ 497,470,179 | |
| 12260 | MOAB | £ 50,000 | |
| 12261 | moarbkup | £ 5,508,731 | |
| 12262 | moarCarparks | £ 5,546,279 | |
| 12263 | MOASS | £ 7,679,455 | |
| 12264 | Mob Life Inc | £ 5,489,924 | |
| 12265 | Mob Mentality | £ 3,456,883 | |
| 12266 | Mobbin Service | £ 37,804,870 | |
| 12267 | Mod786 | £ 28,058,765 | |
| 12268 | Mod7866 | £ 5,631,868 | |
| 12269 | Mode | £ 401,332,556 | |
| 12270 | model | £ 126,900,274 | |
| 12271 | Model 1910 | £ 15,519,029 | |
| 12272 | Model in Black | £ 32,036,184 | |
| 12273 | model1 | £ 298,042,055 | |
| 12274 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 12275 | Modern Chemistry | £ 50,000 | |
| 12276 | Modern Day Filth | £ 39,727,103 | |
| 12277 | modern homes and windows | £ 60,782,477 | |
| 12278 | Modern Medicine | £ 654,006,936 | |
| 12279 | mog | £ 62,817,831 | |
| 12280 | MoguMogu | £ 50,000 | |
| 12281 | Mogwai | £ 2,474,017,302 | |
| 12282 | Mohawk | £ 5,884,779 | |
| 12283 | mohicans | £ 87,704,089 | |
| 12284 | Mojacar | £ 29,168,156 | |
| 12285 | Mojacar Playa | £ 4,415,605 | |
| 12286 | MojoMonies | £ -11,896,511 | |
| 12287 | Mojon Inc | £ 2,533,275 | |
| 12288 | Moldy Bread | £ 3,146,415 | |
| 12289 | Mole | £ 2,572,348 | |
| 12290 | molenstraat | £ 2,013,822 | |
| 12291 | Molko | £ 88,524,189 | |
| 12292 | Molly | £ 58,389,036 | |
| 12293 | Molokozavod | £ 8,147,120 | |
| 12294 | Molotov | £ 4,678,705,578 | |
| 12295 | Moltisanti | £ 88,259,217 | |
| 12296 | Moltke Enterprises | £ 58,439,943 | |
| 12297 | mom | £ 316,315,222 | |
| 12298 | MomCorp | £ 1,768,330 | |
| 12299 | Moment | £ 50,000 | |
| 12300 | Moments | £ 63,735,380 | |
