The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13001 | Merciful | £ 60,300,861 | |
| 13002 | Merciless | £ 52,967,252 | |
| 13003 | Merck and Co Inc | £ 50,000 | |
| 13004 | Mercurial Holdings | £ 277,856,945 | |
| 13005 | Mercury | £ 160,299,846 | |
| 13006 | Mercy | £ 349,349,131 | |
| 13007 | Mercy Mercy Mercy | £ 8,757,338 | |
| 13008 | Merged Worlds | £ 120,586,114 | |
| 13009 | Mergers and acquisitions | £ 230,304,639 | |
| 13010 | Mergers and Monopolies | £ 764,711,644 | |
| 13011 | Merica | £ 56,698,378 | |
| 13012 | Merit | £ 279,136,733 | |
| 13013 | Merlendari | £ 34,644 | |
| 13014 | Merles Anarchsts | £ 3,733,376 | |
| 13015 | merlin co.uk | £ 170,223,625 | |
| 13016 | Merlot | £ 11,016,616 | |
| 13017 | Meropenem | £ 46,690,434 | |
| 13018 | merple | £ 7,684,303 | |
| 13019 | Mess | £ 5,706,454 | |
| 13020 | Messy | £ 1,228,094 | |
| 13021 | MET | £ 20,898,349 | |
| 13022 | Met Police Service | £ 702,416,699 | |
| 13023 | Meta | £ 321,243,521 | |
| 13024 | Metal | £ 854,586,504 | |
| 13025 | Metal Church | £ 55,040,228 | |
| 13026 | Metal Gear | £ 7,948,377 | |
| 13027 | metal mulisha | £ 49,071,127 | |
| 13028 | METAL MULISHA CO | £ 13,264,672 | |
| 13029 | Metal Redneck | £ 13,953,424 | |
| 13030 | metal redneck co | £ 5,500,897 | |
| 13031 | Metalcore.Ind | £ 5,882,041 | |
| 13032 | Metalit | £ 1,398,496 | |
| 13033 | Metallica | £ 38,420,056 | |
| 13034 | MetallicLatice | £ 273,061 | |
| 13035 | Metantatopy | £ 306,149,463 | |
| 13036 | Metaphorisms | £ 1,407,022,970 | |
| 13037 | Metathoric Chocolates | £ 5,505,012 | |
| 13038 | Meteor | £ 5,109,252 | |
| 13039 | Meteor Shower | £ 891,977,507 | |
| 13040 | Meth | £ 83,666,830 | |
| 13041 | Meth Inq | £ 192,418 | |
| 13042 | methadrine inc. | £ -2,620,751 | |
| 13043 | methane | £ 167,580,714 | |
| 13044 | Method Not Allowed | £ 52,592,072 | |
| 13045 | Methuselah | £ 1,235,104,585 | |
| 13046 | metime | £ 7,016,004 | |
| 13047 | Metrics | £ 5,534,939 | |
| 13048 | metro | £ 326,059,689 | |
| 13049 | Metro bucks | £ 54,602,605 | |
| 13050 | Metro News | £ 1,186,988 | |
| 13051 | Metrocity | £ 154,496,934 | |
| 13052 | Metroid | £ 347,551,339 | |
| 13053 | MetroMan | £ 2,205,870 | |
| 13054 | Metropolis | £ 450,406,341 | |
| 13055 | Metropolitan London | £ 7,422,259 | |
| 13056 | MewMew | £ 3,983,504 | |
| 13057 | Mexican Elf-Fellaters | £ 380,836 | |
| 13058 | Mexican Fine Dining | £ 1,120,894,956 | |
| 13059 | Mexico | £ 143,099,228 | |
| 13060 | MG metal | £ 83,272,537 | |
| 13061 | MGandH | £ 5,503,263 | |
| 13062 | MGM Grand Las Vegas | £ 57,107,896 | |
| 13063 | Mi Socio | £ 238,322,295 | |
| 13064 | MI5 | £ 141,793,336 | |
| 13065 | MI6 | £ 150,488,809 | |
| 13066 | Mi6 Bombers | £ 55,997,857 | |
| 13067 | Mia Culpa | £ 262,298,590 | |
| 13068 | mia lingua italiana | £ 446,549,861 | |
| 13069 | Mia Ventures | £ 261,241,688 | |
| 13070 | Miami | £ 58,175,004 | |
| 13071 | Miami Heat | £ 1,187,523 | |
| 13072 | Micasa | £ 12,867,239 | |
| 13073 | Miccpelt | £ 414,182,779 | |
| 13074 | MicDawnalds | £ 56,263 | |
| 13075 | Mice | £ 54,981,578 | |
| 13076 | Mice and Men | £ 406,351,331 | |
| 13077 | Mice CORP | £ 4,657,778 | |
| 13078 | Mice INC | £ -8,592,908 | |
| 13079 | Mice LTD | £ -1,811 | |
| 13080 | Mice TM | £ -240,470 | |
| 13081 | Michael | £ 1,522,266 | |
| 13082 | Michael Jackson | £ 35,590,097 | |
| 13083 | MichaelUnitedJuggernaut | £ 944,737 | |
| 13084 | Michelangelo | £ 98,916,923 | |
| 13085 | Michelin Mogul | £ 89,056,676 | |
| 13086 | Michigan | £ 83,780,074 | |
| 13087 | Michigan 1 | £ 4,091,450 | |
| 13088 | Mickey Mouse | £ 538,185,324 | |
| 13089 | micks empire | £ 5,500,143 | |
| 13090 | Micky | £ 1,186,247,866 | |
| 13091 | Micoss | £ 50,000 | |
| 13092 | Micro Waves | £ 27,270,073 | |
| 13093 | Microbix | £ 5,230,264 | |
| 13094 | Microboom | £ 43,372,557 | |
| 13095 | Microhard | £ 16,911,150 | |
| 13096 | Microjustice | £ 10,747,019 | |
| 13097 | Microserve | £ 5,974,813 | |
| 13098 | Microsft Enterprises | £ 6,100,321 | |
| 13099 | Microsoft | £ 564,820,057 | |
| 13100 | Microsoft Corporation | £ 58,800,390 | |
