The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10301 | missile command | £ 363,500,728 | |
| 10302 | Missiles Incorporated | £ 1,859,206 | |
| 10303 | missing a toe | £ 522,465,864 | |
| 10304 | Mission | £ 166,801,144 | |
| 10305 | Mission Survive | £ 114,950,288 | |
| 10306 | Mississippi | £ 5,500,599 | |
| 10307 | Mississippi Burning | £ 47,665,328 | |
| 10308 | Mississippi Dreams | £ 264,642,910 | |
| 10309 | Mississippi Inc | £ 5,281,962 | |
| 10310 | MississippiMusic | £ 2,811,899 | |
| 10311 | MISSOURI | £ 681,369,203 | |
| 10312 | Missyxx | £ 50,000 | |
| 10313 | Mistake | £ 1,937,719,857 | |
| 10314 | Mistake Not | £ 4,245,817,468 | |
| 10315 | Mistaken Identity | £ 109,775,714 | |
| 10316 | mistaken yidentit | £ 20,847,058 | |
| 10317 | Mistakes | £ 24,462,673 | |
| 10318 | mister | £ 15,343,639 | |
| 10319 | Mistree | £ 50,000 | |
| 10320 | Mitchell Ltd | £ -2,115,101 | |
| 10321 | Mitchell Ltd2 | £ -1,529,234 | |
| 10322 | Mitchell Ltd3 | £ 5,496,523 | |
| 10323 | Mitchell Ltd4 | £ 4,625,817 | |
| 10324 | Mitigating Circumstances | £ 162,513,039 | |
| 10325 | Mitres | £ 684,354,522 | |
| 10326 | mix | £ 11,825,750 | |
| 10327 | Mixture | £ 34,126,543 | |
| 10328 | Mizuko Holdings | £ 50,000 | |
| 10329 | MJHCo. | £ 81,836,520 | |
| 10330 | MJI | £ 5,141,163 | |
| 10331 | MJII | £ 1,514,759 | |
| 10332 | MJIII | £ 1,341,503 | |
| 10333 | MJIV | £ 334,370 | |
| 10334 | MJLee | £ 12,045,209 | |
| 10335 | MJM 2 | £ 50,000 | |
| 10336 | MJM Games | £ 921,860 | |
| 10337 | Mjolnir | £ 5,021,878,570 | |
| 10338 | MK II | £ -371,982 | |
| 10339 | MK Ultra | £ -17,913,353 | |
| 10340 | MKL | £ 3,182,122,075 | |
| 10341 | mkyumku | £ 1,322,486 | |
| 10342 | mlawenterprise | £ 206,267,702 | |
| 10343 | mlawenterprises | £ 74,433,740 | |
| 10344 | MLM Group | £ 85,259,170 | |
| 10345 | MMI | £ 3,194,811 | |
| 10346 | MMI Holdings | £ 2,450,207 | |
| 10347 | MMI2 | £ 4,617,014 | |
| 10348 | MMI3 | £ 161,241 | |
| 10349 | mmmHHHMmm | £ 1,268,288 | |
| 10350 | MMMM CAKE | £ 11,700,419 | |
| 10351 | MMS | £ 728,736 | |
| 10352 | MN Painting | £ 40,314,589 | |
| 10353 | mnb | £ 5,869,704 | |
| 10354 | Mnv | £ 69,523,625 | |
| 10355 | MOAB | £ 50,000 | |
| 10356 | moarbkup | £ 5,508,731 | |
| 10357 | moarCarparks | £ 5,546,279 | |
| 10358 | Mob Life Inc | £ 5,489,924 | |
| 10359 | Mob Mentality | £ 3,456,883 | |
| 10360 | Mobbin Service | £ 37,804,870 | |
| 10361 | Mod786 | £ 28,058,765 | |
| 10362 | Mod7866 | £ 5,631,868 | |
| 10363 | Mode | £ 401,332,556 | |
| 10364 | model | £ 126,900,274 | |
| 10365 | Model 1910 | £ 15,519,029 | |
| 10366 | Model in Black | £ 32,036,184 | |
| 10367 | model1 | £ 298,042,055 | |
| 10368 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 10369 | Modern Chemistry | £ 50,000 | |
| 10370 | Modern Day Filth | £ 39,727,103 | |
| 10371 | modern homes and windows | £ 7,559,098 | |
| 10372 | Modern Medicine | £ 393,199,826 | |
| 10373 | mog | £ 62,817,831 | |
| 10374 | MoguMogu | £ 50,000 | |
| 10375 | Mogwai | £ 2,049,027,926 | |
| 10376 | Mohawk | £ 5,884,779 | |
| 10377 | mohicans | £ 87,704,089 | |
| 10378 | MojoMonies | £ -11,896,511 | |
| 10379 | Mojon Inc | £ 2,533,275 | |
| 10380 | Moldy Bread | £ 3,146,415 | |
| 10381 | Mole | £ 2,572,348 | |
| 10382 | molenstraat | £ 2,013,822 | |
| 10383 | Molko | £ 88,524,189 | |
| 10384 | Molly | £ 58,389,036 | |
| 10385 | Molokozavod | £ 8,147,120 | |
| 10386 | Molotov | £ 4,672,705,578 | |
| 10387 | Moltisanti | £ 84,213,087 | |
| 10388 | Moltke Enterprises | £ 58,439,943 | |
| 10389 | MomCorp | £ 1,768,330 | |
| 10390 | Moment | £ 50,000 | |
| 10391 | Moments | £ 13,838,455 | |
| 10392 | MommaJune | £ 5,871,123 | |
| 10393 | Mommy | £ 7,669,413 | |
| 10394 | MOMOO | £ 147,977 | |
| 10395 | Moms diner | £ 125,413 | |
| 10396 | Mon | £ 8,704,871 | |
| 10397 | Monaco | £ 43,667,263 | |
| 10398 | Monarchic | £ 27,179,904 | |
| 10399 | Monastery | £ 1,678,761 | |
| 10400 | Moncrot | £ 2,803,567 | |
