The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12101 | missing a toe | £ 93,592,827 | |
| 12102 | Mission | £ 166,801,144 | |
| 12103 | Mission Survive | £ 114,950,288 | |
| 12104 | Missionary | £ 53,741,069 | |
| 12105 | Mississippi | £ 5,500,599 | |
| 12106 | Mississippi Burning | £ 47,665,328 | |
| 12107 | Mississippi Dreams | £ 269,344,047 | |
| 12108 | Mississippi Inc | £ 5,281,962 | |
| 12109 | MississippiMusic | £ 2,811,899 | |
| 12110 | MISSOURI | £ 1,148,314,366 | |
| 12111 | Missyxx | £ 50,000 | |
| 12112 | Mistake | £ 1,937,719,857 | |
| 12113 | Mistake Not | £ 4,245,817,468 | |
| 12114 | Mistaken Identity | £ 109,775,714 | |
| 12115 | mistaken yidentit | £ 20,847,058 | |
| 12116 | Mistakes | £ 24,462,673 | |
| 12117 | mister | £ 15,343,639 | |
| 12118 | Mister Mister | £ 25,037,060 | |
| 12119 | Mistree | £ 50,000 | |
| 12120 | Mitchell Ltd | £ -2,115,101 | |
| 12121 | Mitchell Ltd2 | £ -1,529,234 | |
| 12122 | Mitchell Ltd3 | £ 5,496,523 | |
| 12123 | Mitchell Ltd4 | £ 4,625,817 | |
| 12124 | Mitigating Circumstances | £ 162,513,039 | |
| 12125 | Mitres | £ 684,354,522 | |
| 12126 | mix | £ 11,825,750 | |
| 12127 | Mixture | £ 34,126,543 | |
| 12128 | Mizuko Holdings | £ 50,000 | |
| 12129 | MJHCo. | £ 81,836,520 | |
| 12130 | MJI | £ 5,141,163 | |
| 12131 | MJII | £ 1,514,759 | |
| 12132 | MJIII | £ 1,341,503 | |
| 12133 | MJIV | £ 334,370 | |
| 12134 | MJLee | £ 12,045,209 | |
| 12135 | MJM 2 | £ 50,000 | |
| 12136 | MJM Games | £ 921,860 | |
| 12137 | Mjolnir | £ 6,511,676,328 | |
| 12138 | MK II | £ -371,982 | |
| 12139 | MK Ultra | £ -17,913,353 | |
| 12140 | MKL | £ 4,148,360,197 | |
| 12141 | mkyumku | £ 1,322,486 | |
| 12142 | mlawenterprise | £ 206,267,702 | |
| 12143 | mlawenterprises | £ 74,433,740 | |
| 12144 | MLM | £ 5,373,851,635 | |
| 12145 | MLM Group | £ 85,259,170 | |
| 12146 | MMI | £ 3,194,811 | |
| 12147 | MMI Holdings | £ 2,450,207 | |
| 12148 | MMI2 | £ 4,617,014 | |
| 12149 | MMI3 | £ 161,241 | |
| 12150 | mmmHHHMmm | £ 1,268,288 | |
| 12151 | MMMM CAKE | £ 11,700,419 | |
| 12152 | MMORPG | £ 386,202,529 | |
| 12153 | MMS | £ 728,736 | |
| 12154 | MN Painting | £ 69,865,838 | |
| 12155 | mnb | £ 5,869,704 | |
| 12156 | MNGA | £ -591,189 | |
| 12157 | Mnv | £ 69,523,625 | |
| 12158 | Mo Alba | £ 497,470,179 | |
| 12159 | MOAB | £ 50,000 | |
| 12160 | moarbkup | £ 5,508,731 | |
| 12161 | moarCarparks | £ 5,546,279 | |
| 12162 | MOASS | £ 8,428,427 | |
| 12163 | Mob Life Inc | £ 5,489,924 | |
| 12164 | Mob Mentality | £ 3,456,883 | |
| 12165 | Mobbin Service | £ 37,804,870 | |
| 12166 | Mod786 | £ 28,058,765 | |
| 12167 | Mod7866 | £ 5,631,868 | |
| 12168 | Mode | £ 401,332,556 | |
| 12169 | model | £ 126,900,274 | |
| 12170 | Model 1910 | £ 15,519,029 | |
| 12171 | Model in Black | £ 32,036,184 | |
| 12172 | model1 | £ 298,042,055 | |
| 12173 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 12174 | Modern Chemistry | £ 50,000 | |
| 12175 | Modern Day Filth | £ 39,727,103 | |
| 12176 | modern homes and windows | £ 60,782,477 | |
| 12177 | Modern Medicine | £ 656,651,248 | |
| 12178 | mog | £ 62,817,831 | |
| 12179 | MoguMogu | £ 50,000 | |
| 12180 | Mogwai | £ 2,458,017,302 | |
| 12181 | Mohawk | £ 5,884,779 | |
| 12182 | mohicans | £ 87,704,089 | |
| 12183 | Mojacar | £ 1,172,510 | |
| 12184 | Mojacar Playa | £ 116,152 | |
| 12185 | MojoMonies | £ -11,896,511 | |
| 12186 | Mojon Inc | £ 2,533,275 | |
| 12187 | Moldy Bread | £ 3,146,415 | |
| 12188 | Mole | £ 2,572,348 | |
| 12189 | molenstraat | £ 2,013,822 | |
| 12190 | Molko | £ 88,524,189 | |
| 12191 | Molly | £ 58,389,036 | |
| 12192 | Molokozavod | £ 8,147,120 | |
| 12193 | Molotov | £ 4,678,705,578 | |
| 12194 | Moltisanti | £ 88,259,217 | |
| 12195 | Moltke Enterprises | £ 58,439,943 | |
| 12196 | mom | £ 316,315,222 | |
| 12197 | MomCorp | £ 1,768,330 | |
| 12198 | Moment | £ 50,000 | |
| 12199 | Moments | £ 63,735,380 | |
| 12200 | MommaJune | £ 5,871,123 | |
