The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12101 | MactheKnife | £ 12,601,969 | |
| 12102 | Macwill | £ 5,259,176 | |
| 12103 | macwill2285 | £ 9,334,215 | |
| 12104 | MAD AS HELL | £ 2,349,476 | |
| 12105 | Mad Cow Disease | £ 367,617,936 | |
| 12106 | Mad Dog Coll | £ 94,587,311 | |
| 12107 | Mad Dog Enterprise | £ 32,168,238 | |
| 12108 | Mad Dog Ltd | £ 50,000 | |
| 12109 | Mad Dogg Money | £ 65,796,411 | |
| 12110 | Mad Dogs | £ 57,790,153 | |
| 12111 | Mad Fortunate | £ 50,000 | |
| 12112 | madamada | £ 233,630 | |
| 12113 | Madd Dogg 2020 | £ 10,742,409 | |
| 12114 | MadDogHoldings | £ 5,043,725 | |
| 12115 | Maddy Moo | £ 115,199,118 | |
| 12116 | Made for rolling on | £ 10,637,450 | |
| 12117 | Made in Brazil | £ 61,550,105 | |
| 12118 | Made in canada | £ 5,496,632 | |
| 12119 | Made in China | £ 60,382,429 | |
| 12120 | Made in India | £ 18,870,885 | |
| 12121 | made it | £ 9,045,642 | |
| 12122 | madeds | £ 95,442 | |
| 12123 | Madeira Inc | £ 131,914,835 | |
| 12124 | MadHatter | £ -238,315 | |
| 12125 | Madison Square Gardens | £ 611,508,753 | |
| 12126 | MadMafia | £ 132,483,479 | |
| 12127 | madman enterprise | £ 2,426,958 | |
| 12128 | madmen | £ 2,133,394,509 | |
| 12129 | Madness | £ 6,736,333 | |
| 12130 | Madness Inc | £ 71,179,360 | |
| 12131 | MadridCo | £ 63,090,434 | |
| 12132 | Madtax | £ 60,599,818 | |
| 12133 | Maelstrom | £ 74,490 | |
| 12134 | Maes | £ 5,506,699 | |
| 12135 | Maestro Inc | £ 10,020,096 | |
| 12136 | Maestro1 | £ 4,806,635 | |
| 12137 | Maestro3 | £ 50,000 | |
| 12138 | Maezer | £ 85,578,205 | |
| 12139 | MaFFia | £ 83,064,444 | |
| 12140 | Mafia | £ 1,753,185 | |
| 12141 | Mafia Company | £ 30,978,732 | |
| 12142 | Mafia Enterprises | £ 3,573,152 | |
| 12143 | Mafia Inc. | £ 167,187 | |
| 12144 | Mafia Mexicana | £ 265,075,908 | |
| 12145 | Mafioso | £ 76,828,250 | |
| 12146 | mafism | £ 22,493,332 | |
| 12147 | Mag1c | £ 9,025,059 | |
| 12148 | MAGA | £ 149,392,802 | |
| 12149 | Magazine Distributors | £ 37,320,017 | |
| 12150 | Magdalene | £ 1,003,412,911 | |
| 12151 | Magellan of Voyage | £ 5,290,991 | |
| 12152 | Magenta Weed | £ 271,410,952 | |
| 12153 | Maggic7 | £ -443,731 | |
| 12154 | maggots | £ 10,258,546 | |
| 12155 | Magic | £ 487,337,098 | |
| 12156 | Magic Carpet | £ 11,874,743 | |
| 12157 | Magic Emporium | £ 103,205,187 | |
| 12158 | Magic Industries | £ -1,643 | |
| 12159 | Magic Mirror | £ 2,172,047 | |
| 12160 | Magic Monkeyz | £ 8,114,425 | |
| 12161 | Magic Mountain | £ 61,649,049 | |
| 12162 | Magic Mushrooms | £ 160,108,013 | |
| 12163 | Magic Pie | £ 490,215,342 | |
| 12164 | Magic Rock Garden | £ 88,058,735 | |
| 12165 | Magic Round About | £ 60,232,415 | |
| 12166 | Magic Roundabout | £ 5,733,823 | |
| 12167 | Magic Stars | £ 95,200,834 | |
| 12168 | Magic Unicorns | £ 5,507,889 | |
| 12169 | Magical Moments | £ 17,489,463 | |
| 12170 | Magician | £ 43,263,578 | |
| 12171 | magics | £ 9,148,464 | |
| 12172 | Magik | £ 8,435,088 | |
| 12173 | Magikarp | £ 54,441,892 | |
| 12174 | magma | £ 256,976,687 | |
| 12175 | Magnag Industries | £ 5,423,817 | |
| 12176 | Magnesia | £ 636,027,322 | |
| 12177 | Magnesium | £ -10,504,907 | |
| 12178 | Magnolia Properties | £ 5,505,968 | |
| 12179 | Magnum P.I. | £ 4,478,573,315 | |
| 12180 | Magnum Performance | £ 1,406,444 | |
| 12181 | Magnus Global | £ 79,802,258 | |
| 12182 | MagnusCorp | £ 56,468,260 | |
| 12183 | Magoo | £ 17,276,464 | |
| 12184 | Magoos | £ 35,729,833 | |
| 12185 | Magpie | £ 5,500,937 | |
| 12186 | Magrathea | £ 54,106,264 | |
| 12187 | Mags Estate | £ 5,508,790 | |
| 12188 | Mags Ltd | £ 4,552,528 | |
| 12189 | Mags Summer | £ 5,708,628 | |
| 12190 | Mai Kao Jai | £ 38,479,227 | |
| 12191 | Maicibai | £ 47,404,486 | |
| 12192 | Maid | £ 25,627,043 | |
| 12193 | £ 399,681,500 | ||
| 12194 | Main Force Patrol | £ 32,257,237 | |
| 12195 | Main Street | £ 635,684,017 | |
| 12196 | Maison and Co | £ 2,656,528 | |
| 12197 | Major Space Crossroutes | £ 74,533,795 | |
| 12198 | Major Suite | £ 17,697 | |
| 12199 | Makaveli | £ 59,162,119 | |
| 12200 | Makaveli II | £ 44,201,619 | |
