The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10801 | Mish Mash | £ 175,294,773 | |
| 10802 | Misinterpretation | £ 486,461 | |
| 10803 | Miss Bitch bombers | £ 4,512,007 | |
| 10804 | MissFubar PLC | £ 31,726,370 | |
| 10805 | missile command | £ 363,500,728 | |
| 10806 | Missiles Incorporated | £ 1,859,206 | |
| 10807 | missing a toe | £ 84,714,943 | |
| 10808 | Mission | £ 166,801,144 | |
| 10809 | Mission Survive | £ 114,950,288 | |
| 10810 | Mississippi | £ 5,500,599 | |
| 10811 | Mississippi Burning | £ 47,665,328 | |
| 10812 | Mississippi Dreams | £ 266,627,301 | |
| 10813 | Mississippi Inc | £ 5,281,962 | |
| 10814 | MississippiMusic | £ 2,811,899 | |
| 10815 | MISSOURI | £ 1,148,314,366 | |
| 10816 | Missyxx | £ 50,000 | |
| 10817 | Mistake | £ 1,937,719,857 | |
| 10818 | Mistake Not | £ 4,245,817,468 | |
| 10819 | Mistaken Identity | £ 109,775,714 | |
| 10820 | mistaken yidentit | £ 20,847,058 | |
| 10821 | Mistakes | £ 24,462,673 | |
| 10822 | mister | £ 15,343,639 | |
| 10823 | Mister Nice Guy | £ 5,215,298 | |
| 10824 | Mistree | £ 50,000 | |
| 10825 | Mitchell Ltd | £ -2,115,101 | |
| 10826 | Mitchell Ltd2 | £ -1,529,234 | |
| 10827 | Mitchell Ltd3 | £ 5,496,523 | |
| 10828 | Mitchell Ltd4 | £ 4,625,817 | |
| 10829 | Mitigating Circumstances | £ 162,513,039 | |
| 10830 | Mitres | £ 684,354,522 | |
| 10831 | mix | £ 11,825,750 | |
| 10832 | Mixture | £ 34,126,543 | |
| 10833 | Mizuko Holdings | £ 50,000 | |
| 10834 | MJHCo. | £ 81,836,520 | |
| 10835 | MJI | £ 5,141,163 | |
| 10836 | MJII | £ 1,514,759 | |
| 10837 | MJIII | £ 1,341,503 | |
| 10838 | MJIV | £ 334,370 | |
| 10839 | MJLee | £ 12,045,209 | |
| 10840 | MJM 2 | £ 50,000 | |
| 10841 | MJM Games | £ 921,860 | |
| 10842 | Mjolnir | £ 5,706,909,725 | |
| 10843 | MK II | £ -371,982 | |
| 10844 | MK Ultra | £ -17,913,353 | |
| 10845 | MKL | £ 3,182,122,075 | |
| 10846 | mkyumku | £ 1,322,486 | |
| 10847 | mlawenterprise | £ 206,267,702 | |
| 10848 | mlawenterprises | £ 74,433,740 | |
| 10849 | MLM Group | £ 85,259,170 | |
| 10850 | MMI | £ 3,194,811 | |
| 10851 | MMI Holdings | £ 2,450,207 | |
| 10852 | MMI2 | £ 4,617,014 | |
| 10853 | MMI3 | £ 161,241 | |
| 10854 | mmmHHHMmm | £ 1,268,288 | |
| 10855 | MMMM CAKE | £ 11,700,419 | |
| 10856 | MMORPG | £ 194,220,217 | |
| 10857 | MMS | £ 728,736 | |
| 10858 | MN Painting | £ 40,314,589 | |
| 10859 | mnb | £ 5,869,704 | |
| 10860 | Mnv | £ 69,523,625 | |
| 10861 | Mo Alba | £ 497,470,179 | |
| 10862 | MOAB | £ 50,000 | |
| 10863 | moarbkup | £ 5,508,731 | |
| 10864 | moarCarparks | £ 5,546,279 | |
| 10865 | Mob Life Inc | £ 5,489,924 | |
| 10866 | Mob Mentality | £ 3,456,883 | |
| 10867 | Mobbin Service | £ 37,804,870 | |
| 10868 | Mod786 | £ 28,058,765 | |
| 10869 | Mod7866 | £ 5,631,868 | |
| 10870 | Mode | £ 401,332,556 | |
| 10871 | model | £ 126,900,274 | |
| 10872 | Model 1910 | £ 15,519,029 | |
| 10873 | Model in Black | £ 32,036,184 | |
| 10874 | model1 | £ 298,042,055 | |
| 10875 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 10876 | Modern Chemistry | £ 50,000 | |
| 10877 | Modern Day Filth | £ 39,727,103 | |
| 10878 | modern homes and windows | £ 7,559,098 | |
| 10879 | Modern Medicine | £ 537,151,460 | |
| 10880 | mog | £ 62,817,831 | |
| 10881 | MoguMogu | £ 50,000 | |
| 10882 | Mogwai | £ 2,163,209,140 | |
| 10883 | Mohawk | £ 5,884,779 | |
| 10884 | mohicans | £ 87,704,089 | |
| 10885 | MojoMonies | £ -11,896,511 | |
| 10886 | Mojon Inc | £ 2,533,275 | |
| 10887 | Moldy Bread | £ 3,146,415 | |
| 10888 | Mole | £ 2,572,348 | |
| 10889 | molenstraat | £ 2,013,822 | |
| 10890 | Molko | £ 88,524,189 | |
| 10891 | Molly | £ 58,389,036 | |
| 10892 | Molokozavod | £ 8,147,120 | |
| 10893 | Molotov | £ 4,678,705,578 | |
| 10894 | Moltisanti | £ 84,213,087 | |
| 10895 | Moltke Enterprises | £ 58,439,943 | |
| 10896 | mom | £ 83,913,665 | |
| 10897 | MomCorp | £ 1,768,330 | |
| 10898 | Moment | £ 50,000 | |
| 10899 | Moments | £ 13,838,455 | |
| 10900 | MommaJune | £ 5,871,123 | |
