The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12801 | Medications | £ 52,273,973 | |
| 12802 | Medicine | £ 107,658,336 | |
| 12803 | Medicine.Com | £ 184,984,146 | |
| 12804 | Medient | £ 508,983 | |
| 12805 | Mediolanum | £ 45,473,265 | |
| 12806 | Mediumship | £ 464,431,181 | |
| 12807 | MedPharm | £ 62,403,617 | |
| 12808 | Medusa | £ 290,947,180 | |
| 12809 | Medwain | £ 110,111,172 | |
| 12810 | Mee | £ 27,657,186 | |
| 12811 | Meebs | £ 50,595,344 | |
| 12812 | Meeney Corp | £ 9,839,052 | |
| 12813 | Meeny Inc | £ 22,570,987 | |
| 12814 | Meep meep | £ 493,156,074 | |
| 12815 | Meerkats | £ 550,594,543 | |
| 12816 | MEG LTD | £ 23,571 | |
| 12817 | Mega Blox | £ 25,734,743,277 | |
| 12818 | MEGA BUDZ | £ 141,053 | |
| 12819 | Mega Corporation | £ 172,049 | |
| 12820 | Mega Corporations | £ 46,579,095 | |
| 12821 | Mega Mindy | £ 4,096,781 | |
| 12822 | Mega Mullets | £ 85,925,337 | |
| 12823 | MEGA Resources | £ 572,731 | |
| 12824 | Megababy Co. | £ 50,000 | |
| 12825 | Megabucks | £ 111,934 | |
| 12826 | Megabucks Dundee | £ 50,000 | |
| 12827 | Megabucks Inc | £ 5,930,887 | |
| 12828 | Megabucks United | £ 4,290,972 | |
| 12829 | Megabyte Systems | £ 253,707,685 | |
| 12830 | Megacorp | £ 594,680 | |
| 12831 | MEGACUCKxXxPEENLOVER | £ 6,893,653 | |
| 12832 | Megadeth | £ 65,357,403 | |
| 12833 | MegaDeth Mob | £ 61,516,745 | |
| 12834 | MegaloMafia | £ 612,786 | |
| 12835 | megamolloy | £ 2,797,245 | |
| 12836 | megamolloy3 | £ 4,226,104 | |
| 12837 | megapolis | £ 27,651,775 | |
| 12838 | Megasuperbadass Mart | £ 2,903,109 | |
| 12839 | Megaton | £ 290,639,244 | |
| 12840 | Megaton Atomic Research | £ 7,533,717 | |
| 12841 | Megatron | £ 397,174,154 | |
| 12842 | Mehoff Erection Co | £ 4,005,620 | |
| 12843 | Mehrunes Dagon | £ 293,312,589 | |
| 12844 | Mein Kampf | £ 183,164,770 | |
| 12845 | Melandas | £ 4,266,236 | |
| 12846 | Melandas Dynasty | £ 4,129,183 | |
| 12847 | Melandas General | £ 2,020,971 | |
| 12848 | Melandas Global | £ 3,541,345 | |
| 12849 | Melandas Pte Ltd | £ 3,229,876 | |
| 12850 | Melbourne | £ 419,554,023 | |
| 12851 | Melissa | £ 1,881,255,957 | |
| 12852 | Mellonballs | £ 9,882 | |
| 12853 | Mellons | £ 11,146 | |
| 12854 | Melodic Minor | £ 38,491,832 | |
| 12855 | Melting Apples | £ 53,274,340 | |
| 12856 | Melvin Capital | £ 16,421,242 | |
| 12857 | Members Only | £ 3,896,168 | |
| 12858 | Memo Re Foam | £ 163,951,375 | |
| 12859 | Memoria | £ 82,597,593 | |
| 12860 | Memories of Things | £ 427,189,259 | |
| 12861 | Memorize | £ 69,073,122 | |
| 12862 | Memory | £ 8,338,774 | |
| 12863 | memos | £ 57,333,960 | |
| 12864 | Men | £ 51,105,006 | |
| 12865 | Men In Black | £ 15,048,355 | |
| 12866 | men of mayhem | £ 5,110,741 | |
| 12867 | Menace | £ 120,290,215 | |
| 12868 | Mend | £ 28,443,353 | |
| 12869 | Mendozas | £ 10,155,704 | |
| 12870 | Menial Duties | £ 13,587,228 | |
| 12871 | Mensa | £ 30,678,192 | |
| 12872 | Mental | £ 18,517,755 | |
| 12873 | Mental corp | £ 50,000 | |
| 12874 | Mental Depression | £ 221,209 | |
| 12875 | Mental Disease | £ 619,169,867 | |
| 12876 | Meow Meow Corporation | £ 9,692,122 | |
| 12877 | Meowmeows | £ 6,546,378 | |
| 12878 | Mephisto | £ 230,844,295 | |
| 12879 | Mercedes | £ 333,388,191 | |
| 12880 | Mercedes Benz | £ 13,561,258 | |
| 12881 | Mercedes-Benz | £ 12,312,085 | |
| 12882 | MercedesAMG Petronas F1 | £ 54,084,993 | |
| 12883 | Mercenaries | £ 1,427,822,080 | |
| 12884 | Mercenaries R Us | £ 119,524,890 | |
| 12885 | Merchiston | £ 79,224,604 | |
| 12886 | Merciful | £ 60,300,861 | |
| 12887 | Merck and Co Inc | £ 55,000,000 | |
| 12888 | Mercurial Holdings | £ 1,065,339,045 | |
| 12889 | Mercury | £ 83,833,529 | |
| 12890 | Mercy | £ 349,349,131 | |
| 12891 | Mercy Mercy Mercy | £ 12,805,991 | |
| 12892 | Merged Worlds | £ 179,290,627 | |
| 12893 | Mergers and acquisitions | £ 410,996,824 | |
| 12894 | Mergers and Monopolies | £ 1,022,067,123 | |
| 12895 | Merica | £ 56,698,378 | |
| 12896 | Meridian Marauders | £ 61,930,975 | |
| 12897 | Meritocracy | £ 10,965,715 | |
| 12898 | Merlendari | £ 34,644 | |
| 12899 | Merles Anarchsts | £ 3,733,376 | |
| 12900 | Merlin | £ 205,934,747 | |
