The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10101 | Mad Cow Disease | £ 234,949,875 | |
| 10102 | Mad Dog Enterprise | £ 32,168,238 | |
| 10103 | Mad Dog Ltd | £ 50,000 | |
| 10104 | Mad Dogg Money | £ 65,796,411 | |
| 10105 | Mad Dogs | £ 57,790,153 | |
| 10106 | Mad Fortunate | £ 50,000 | |
| 10107 | Madd Dogg 2020 | £ 10,742,409 | |
| 10108 | MadDogHoldings | £ 13,553,898 | |
| 10109 | Maddy Moo | £ 115,199,118 | |
| 10110 | Made for rolling on | £ 10,637,450 | |
| 10111 | Made in Brazil | £ 61,550,105 | |
| 10112 | Made in canada | £ 5,496,632 | |
| 10113 | Made in China | £ 60,382,429 | |
| 10114 | Made in India | £ 18,870,885 | |
| 10115 | made it | £ 9,045,642 | |
| 10116 | Madeira Inc | £ 131,914,835 | |
| 10117 | MadHatter | £ -238,315 | |
| 10118 | MadMafia | £ 132,483,479 | |
| 10119 | madman enterprise | £ 2,426,958 | |
| 10120 | madmen | £ 1,941,412,185 | |
| 10121 | Madness | £ 6,736,333 | |
| 10122 | Madness Inc | £ 71,179,360 | |
| 10123 | MadridCo | £ 63,090,434 | |
| 10124 | Maelstrom | £ 74,490 | |
| 10125 | Maes | £ 5,506,699 | |
| 10126 | Maestro Inc | £ 10,020,096 | |
| 10127 | Maestro1 | £ 4,806,635 | |
| 10128 | Maestro3 | £ 50,000 | |
| 10129 | Maezer | £ 85,578,205 | |
| 10130 | MaFFia | £ 131,388,043 | |
| 10131 | Mafia | £ 1,753,185 | |
| 10132 | Mafia Company | £ 30,978,732 | |
| 10133 | Mafia Enterprises | £ 3,573,152 | |
| 10134 | Mafia Inc. | £ 167,187 | |
| 10135 | Mafia Mexicana | £ 265,075,908 | |
| 10136 | Mafia Shipping | £ 5,725,046 | |
| 10137 | Mafioso | £ 56,430,577 | |
| 10138 | mafism | £ 22,493,332 | |
| 10139 | Mag1c | £ 9,025,059 | |
| 10140 | MAGA | £ 122,020,170 | |
| 10141 | Magazine Distributors | £ 37,320,017 | |
| 10142 | Magdalene | £ 1,003,412,911 | |
| 10143 | Magellan of Voyage | £ 5,290,991 | |
| 10144 | Magenta Weed | £ 271,410,952 | |
| 10145 | Maggic7 | £ -443,731 | |
| 10146 | Magic | £ 273,993,220 | |
| 10147 | Magic Carpet | £ 11,874,743 | |
| 10148 | Magic Emporium | £ 103,205,187 | |
| 10149 | Magic Industries | £ -1,643 | |
| 10150 | Magic Monkeyz | £ 8,114,425 | |
| 10151 | Magic Mushrooms | £ 160,108,013 | |
| 10152 | Magic Pie | £ 490,215,342 | |
| 10153 | Magic Rock Garden | £ 88,058,735 | |
| 10154 | Magic Round About | £ 60,232,415 | |
| 10155 | Magic Roundabout | £ 5,733,823 | |
| 10156 | Magic Stars | £ 173,127,270 | |
| 10157 | Magic Unicorns | £ 5,507,889 | |
| 10158 | Magician | £ 43,263,578 | |
| 10159 | magics | £ -12,910,537 | |
| 10160 | Magik | £ 8,435,088 | |
| 10161 | Magikarp | £ 54,441,892 | |
| 10162 | magma | £ 253,976,687 | |
| 10163 | Magnag Industries | £ 5,423,817 | |
| 10164 | Magnesia | £ 657,222,330 | |
| 10165 | Magnolia Properties | £ 5,505,968 | |
| 10166 | Magnum P.I. | £ 3,800,573,315 | |
| 10167 | Magnum Performance | £ 1,406,444 | |
| 10168 | Magnus Global | £ 79,802,258 | |
| 10169 | MagnusCorp | £ 56,468,260 | |
| 10170 | Magoo | £ 17,276,464 | |
| 10171 | Magoos | £ 35,729,833 | |
| 10172 | Magpie | £ 5,500,937 | |
| 10173 | Mags Estate | £ 5,508,790 | |
| 10174 | Mags Ltd | £ 4,552,528 | |
| 10175 | Mags Summer | £ 5,708,628 | |
| 10176 | Mai Kao Jai | £ 38,479,227 | |
| 10177 | Maicibai | £ 47,404,486 | |
| 10178 | Maid | £ 19,422,174 | |
| 10179 | £ 410,413,417 | ||
| 10180 | Main Force Patrol | £ 32,257,237 | |
| 10181 | Maison and Co | £ 2,656,528 | |
| 10182 | Major Suite | £ 17,697 | |
| 10183 | Makaveli | £ 54,448,813 | |
| 10184 | Makaveli II | £ 44,417,952 | |
| 10185 | Make America Great Again | £ 5,508,261 | |
| 10186 | Make Another Move | £ 225,614,005 | |
| 10187 | Make Gotham Great | £ 134,979,354 | |
| 10188 | make money | £ 4,810,592 | |
| 10189 | Make Netro Great | £ 3,983,342 | |
| 10190 | make this yet | £ 48,850,871 | |
| 10191 | makeofthis | £ 132,347,912 | |
| 10192 | maker | £ 6,849,833 | |
| 10193 | Maker Inc. | £ 2,239,625 | |
| 10194 | Makes Me Feel Fine | £ 64,773,514 | |
| 10195 | Making America Great | £ 164,451,564 | |
| 10196 | Making Pennies | £ 92,844,685 | |
| 10197 | Mako | £ 7,379,065 | |
| 10198 | Maks a Muckle | £ 938,220,068 | |
| 10199 | Malak.Co | £ -47,512 | |
| 10200 | Malaria | £ 1,959,297 | |
