The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12201 | Mental Disease | £ 619,169,867 | |
| 12202 | Meow Meow Corporation | £ 9,692,122 | |
| 12203 | Meowmeows | £ 6,546,378 | |
| 12204 | Mephisto | £ 160,553,973 | |
| 12205 | Mephistopheles | £ 108,730,107 | |
| 12206 | Mercedes | £ 333,388,191 | |
| 12207 | Mercedes Benz | £ 13,561,258 | |
| 12208 | MercedesAMG Petronas F1 | £ 54,084,993 | |
| 12209 | Mercenaries | £ 1,421,945,420 | |
| 12210 | Mercenaries R Us | £ 119,524,890 | |
| 12211 | Merchiston | £ 79,224,604 | |
| 12212 | Merciful | £ 60,300,861 | |
| 12213 | Merciless | £ 52,967,252 | |
| 12214 | Merck and Co Inc | £ 50,000 | |
| 12215 | Mercurial Holdings | £ 347,075,559 | |
| 12216 | Mercurial Skirmish 161 | £ 18,337,880 | |
| 12217 | Mercury | £ 143,136,466 | |
| 12218 | Mercy | £ 349,349,131 | |
| 12219 | Merged Worlds | £ 120,586,114 | |
| 12220 | Mergers and acquisitions | £ 166,195,751 | |
| 12221 | Mergers and Monopolies | £ 451,752,185 | |
| 12222 | Merica | £ 56,698,378 | |
| 12223 | Merit | £ 252,144,129 | |
| 12224 | Merlendari | £ 34,644 | |
| 12225 | Merles Anarchsts | £ 3,733,376 | |
| 12226 | Meropenem | £ 48,919,652 | |
| 12227 | merple | £ 7,684,303 | |
| 12228 | Messy | £ 1,228,094 | |
| 12229 | MET | £ 20,898,349 | |
| 12230 | Met Police Service | £ 467,097,422 | |
| 12231 | Metal | £ 72,184,695 | |
| 12232 | Metal Church | £ 55,040,228 | |
| 12233 | Metal Gear | £ 7,948,377 | |
| 12234 | metal mulisha | £ 49,071,127 | |
| 12235 | METAL MULISHA CO | £ 13,264,672 | |
| 12236 | Metal Redneck | £ 13,953,424 | |
| 12237 | metal redneck co | £ 5,500,897 | |
| 12238 | Metalcore.Ind | £ 5,882,041 | |
| 12239 | Metalit | £ 1,398,496 | |
| 12240 | Metallica | £ 38,420,056 | |
| 12241 | MetallicLatice | £ 273,061 | |
| 12242 | Metantatopy | £ 306,149,463 | |
| 12243 | Metaphorisms | £ 1,409,845,833 | |
| 12244 | Metathoric Chocolates | £ 1,190,743 | |
| 12245 | Meteor Shower | £ 891,977,507 | |
| 12246 | Meth | £ 83,666,830 | |
| 12247 | Meth Inq | £ 192,418 | |
| 12248 | methadrine inc. | £ -2,620,751 | |
| 12249 | methane | £ 167,580,714 | |
| 12250 | Methuselah | £ 1,235,104,585 | |
| 12251 | metime | £ 7,016,004 | |
| 12252 | MeToo | £ 48,902,168 | |
| 12253 | Metrics | £ 5,126,990 | |
| 12254 | metro | £ 326,059,689 | |
| 12255 | Metro News | £ 1,186,988 | |
| 12256 | Metrocity | £ 117,426,077 | |
| 12257 | Metroid | £ 292,723,831 | |
| 12258 | MetroMan | £ 2,205,870 | |
| 12259 | Metropolis | £ 223,601,910 | |
| 12260 | MewMew | £ 3,983,504 | |
| 12261 | Mexican Elf-Fellaters | £ 380,836 | |
| 12262 | Mexican Fine Dining | £ 947,118,509 | |
| 12263 | Mexico | £ 143,099,228 | |
| 12264 | MG metal | £ 83,272,537 | |
| 12265 | MGandH | £ 5,503,263 | |
| 12266 | Mi Socio | £ 236,861,461 | |
| 12267 | MI5 | £ 141,793,336 | |
| 12268 | MI6 | £ 150,488,809 | |
| 12269 | Mia Culpa | £ 288,407,021 | |
| 12270 | mia lingua italiana | £ 446,549,861 | |
| 12271 | Mia Ventures | £ 246,435,277 | |
| 12272 | Miami | £ 58,175,004 | |
| 12273 | Miami Heat | £ 1,187,523 | |
| 12274 | Micasa | £ 12,867,239 | |
| 12275 | Miccpelt | £ 414,182,779 | |
| 12276 | Mice | £ 54,981,578 | |
| 12277 | Mice and Men | £ 406,351,331 | |
| 12278 | Mice CORP | £ 4,657,778 | |
| 12279 | Mice INC | £ -8,592,908 | |
| 12280 | Mice LTD | £ -1,811 | |
| 12281 | Mice TM | £ -240,470 | |
| 12282 | Michael | £ 1,522,266 | |
| 12283 | Michael Jackson | £ 35,590,097 | |
| 12284 | MichaelUnitedJuggernaut | £ 944,737 | |
| 12285 | Michelangelo | £ 98,916,923 | |
| 12286 | Michelin Mogul | £ 89,056,676 | |
| 12287 | Michigan | £ 83,780,074 | |
| 12288 | Michigan 1 | £ 4,091,450 | |
| 12289 | Mickey Mouse | £ 534,504,800 | |
| 12290 | micks empire | £ 5,500,143 | |
| 12291 | Micky | £ 1,186,247,866 | |
| 12292 | Micoss | £ 50,000 | |
| 12293 | Micro Waves | £ 27,270,073 | |
| 12294 | Microbix | £ 5,230,264 | |
| 12295 | Microboom | £ 45,468,171 | |
| 12296 | Microhard | £ 16,911,150 | |
| 12297 | Microserve | £ 5,974,813 | |
| 12298 | Microsft Enterprises | £ 6,100,321 | |
| 12299 | Microsoft | £ 564,820,057 | |
| 12300 | Microsoft Corporation | £ 58,800,390 | |
