The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10101 | MississippiMusic | £ 2,811,899 | |
| 10102 | MISSOURI | £ 368,426,304 | |
| 10103 | Missyxx | £ 50,000 | |
| 10104 | Mistake | £ 1,937,719,857 | |
| 10105 | Mistake Not | £ 4,245,817,468 | |
| 10106 | Mistaken Identity | £ 109,775,714 | |
| 10107 | mistaken yidentit | £ 20,847,058 | |
| 10108 | Mistakes | £ 24,462,673 | |
| 10109 | mister | £ 15,343,639 | |
| 10110 | Mistree | £ 50,000 | |
| 10111 | Mitchell Ltd | £ -2,115,101 | |
| 10112 | Mitchell Ltd2 | £ -1,529,234 | |
| 10113 | Mitchell Ltd3 | £ 5,496,523 | |
| 10114 | Mitchell Ltd4 | £ 4,625,817 | |
| 10115 | Mitigating Circumstances | £ 162,513,039 | |
| 10116 | Mitres | £ 684,354,522 | |
| 10117 | mix | £ 11,825,750 | |
| 10118 | Mixture | £ 34,126,543 | |
| 10119 | Mizuko Holdings | £ 50,000 | |
| 10120 | MJHCo. | £ 81,836,520 | |
| 10121 | MJI | £ 5,141,163 | |
| 10122 | MJII | £ 1,514,759 | |
| 10123 | MJIII | £ 1,341,503 | |
| 10124 | MJIV | £ 334,370 | |
| 10125 | MJLee | £ 12,045,209 | |
| 10126 | MJM 2 | £ 50,000 | |
| 10127 | MJM Games | £ 921,860 | |
| 10128 | Mjolnir | £ 4,691,078,345 | |
| 10129 | MK II | £ -371,982 | |
| 10130 | MK Ultra | £ -17,913,353 | |
| 10131 | MKL | £ 3,182,122,075 | |
| 10132 | mkyumku | £ 1,322,486 | |
| 10133 | mlawenterprise | £ 206,267,702 | |
| 10134 | mlawenterprises | £ 74,433,740 | |
| 10135 | MLM Group | £ 85,259,170 | |
| 10136 | MMI | £ 3,194,811 | |
| 10137 | MMI Holdings | £ 2,450,207 | |
| 10138 | MMI2 | £ 4,617,014 | |
| 10139 | MMI3 | £ 161,241 | |
| 10140 | mmmHHHMmm | £ 1,268,288 | |
| 10141 | MMMM CAKE | £ 11,700,419 | |
| 10142 | MMS | £ 728,736 | |
| 10143 | MN Painting | £ 40,314,589 | |
| 10144 | mnb | £ 5,869,704 | |
| 10145 | Mnv | £ 69,523,625 | |
| 10146 | MOAB | £ 50,000 | |
| 10147 | moarbkup | £ 5,508,731 | |
| 10148 | moarCarparks | £ 1,698,823 | |
| 10149 | Mob Life Inc | £ 5,489,924 | |
| 10150 | Mob Mentality | £ 3,456,883 | |
| 10151 | Mobbin Service | £ 37,804,870 | |
| 10152 | Mod786 | £ 28,058,765 | |
| 10153 | Mod7866 | £ 5,631,868 | |
| 10154 | Mode | £ 401,332,556 | |
| 10155 | model | £ 126,900,274 | |
| 10156 | Model 1910 | £ 15,519,029 | |
| 10157 | Model in Black | £ 32,036,184 | |
| 10158 | model1 | £ 298,042,055 | |
| 10159 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 10160 | Modern Chemistry | £ 50,000 | |
| 10161 | Modern Day Filth | £ 39,727,103 | |
| 10162 | modern homes and windows | £ 7,559,098 | |
| 10163 | Modern Medicine | £ 392,998,397 | |
| 10164 | mog | £ 62,817,831 | |
| 10165 | MoguMogu | £ 50,000 | |
| 10166 | Mogwai | £ 1,990,136,059 | |
| 10167 | Mohawk | £ 5,884,779 | |
| 10168 | mohicans | £ 87,704,089 | |
| 10169 | MojoMonies | £ -11,896,511 | |
| 10170 | Mojon Inc | £ 2,533,275 | |
| 10171 | Moldy Bread | £ 3,146,415 | |
| 10172 | Mole | £ 2,572,348 | |
| 10173 | molenstraat | £ 2,013,822 | |
| 10174 | Molko | £ 88,524,189 | |
| 10175 | Molly | £ 58,389,036 | |
| 10176 | Molokozavod | £ 8,147,120 | |
| 10177 | Molotov | £ 4,522,492,561 | |
| 10178 | Moltisanti | £ 84,213,087 | |
| 10179 | Moltke Enterprises | £ 58,439,943 | |
| 10180 | Moment | £ 50,000 | |
| 10181 | Moments | £ 13,838,455 | |
| 10182 | MommaJune | £ 5,871,123 | |
| 10183 | Mommy | £ 7,669,413 | |
| 10184 | MOMOO | £ 147,977 | |
| 10185 | Moms diner | £ 125,413 | |
| 10186 | Mon | £ 8,704,871 | |
| 10187 | Monaco | £ 43,667,263 | |
| 10188 | Monarchic | £ 27,179,904 | |
| 10189 | Monastery | £ 1,678,761 | |
| 10190 | Moncrot | £ 2,803,567 | |
| 10191 | Moncton | £ 252,860,791 | |
| 10192 | Monetary Policy | £ 220,444,821 | |
| 10193 | Money | £ 56,804,752 | |
| 10194 | Money Bags | £ 4,555,558 | |
| 10195 | Money Club | £ 3,724,557 | |
| 10196 | Money Inc. | £ 5,469,873 | |
| 10197 | Money Laundering | £ 262,767,694 | |
| 10198 | Money Lenders | £ 11,476,352 | |
| 10199 | Money Ltd | £ 4,615,437 | |
| 10200 | money mad | £ 3,798,586 | |
