The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13701 | Maniac Express | £ 24,619,316 | |
| 13702 | Manic Miner | £ 81,614,358 | |
| 13703 | Manifest Destiny | £ 1,269,088,350 | |
| 13704 | Manities | £ 59,837,318 | |
| 13705 | Mankind | £ 170,883,979 | |
| 13706 | Mankind Divided | £ 511,833,059 | |
| 13707 | Manliness | £ 36,274,091 | |
| 13708 | Manly Living | £ 2,808,857 | |
| 13709 | ManManMan | £ 47,858,669 | |
| 13710 | Mann | £ 216,385,545 | |
| 13711 | Mannanin Co | £ 8,845,526 | |
| 13712 | Manners | £ 5,259,968 | |
| 13713 | Manny | £ 1,263,886,299 | |
| 13714 | Mans Best Friend | £ 279,475,422 | |
| 13715 | Mans World | £ 114,904,442 | |
| 13716 | Mansell Industries Ltd. | £ 5,444,121,114 | |
| 13717 | Mansfield Bitter | £ 397,755,385 | |
| 13718 | Manta | £ 7,067,125,870 | |
| 13719 | Manta. | £ 21,707,124 | |
| 13720 | mantis | £ 5,463,181 | |
| 13721 | manu-de-janeiro | £ 12,962,879 | |
| 13722 | manu-upon-avon | £ 106,781,988 | |
| 13723 | manu-upon-avon2 | £ 7,786,748 | |
| 13724 | manu-upon-tyne | £ 12,073,546 | |
| 13725 | Manual Shift | £ 514,808,382 | |
| 13726 | Manwe Sulimo | £ 1,555,092,617 | |
| 13727 | Many | £ 5,464,758 | |
| 13728 | Many acres | £ 529,586,073 | |
| 13729 | many burner comps | £ 998,181,540 | |
| 13730 | Many Cities | £ 3,956,482 | |
| 13731 | many companies | £ 64,173,944 | |
| 13732 | Many Ends | £ 10,771,456 | |
| 13733 | Many Faces | £ 360,143,696 | |
| 13734 | Many Fossil Fuels | £ 55,702,842 | |
| 13735 | Many houses | £ 362,641,942 | |
| 13736 | Many Missiles | £ 323,489,477 | |
| 13737 | Many Monies Corporation | £ 50,000 | |
| 13738 | Many more | £ 62,287,354 | |
| 13739 | Many mushrooms | £ -14,428,318 | |
| 13740 | Many Mysteries | £ 765,679 | |
| 13741 | Many Names | £ 126,369,379 | |
| 13742 | many numbers | £ 43,995,214 | |
| 13743 | many sources | £ 104,908,241 | |
| 13744 | Many Talents | £ 5,504,706 | |
| 13745 | many wars | £ 107,597,129 | |
| 13746 | Many Women | £ 9,789,150 | |
| 13747 | Mao Tse-Tung | £ 2,985,024,402 | |
| 13748 | Mao Tsu Tsung | £ -1,713,345 | |
| 13749 | Maolina | £ 6,447,323 | |
| 13750 | Maose BV | £ 46,741 | |
| 13751 | Maosim | £ 91,071,858 | |
| 13752 | Map 1 | £ 225,267,148 | |
| 13753 | Map Flateners | £ 66,340,384 | |
| 13754 | Maple Leaf | £ 9,272,710 | |
| 13755 | Maple Syrup Monsters | £ 5,683,586 | |
| 13756 | MapleGrove | £ 483,977 | |
| 13757 | Mapleton Corp | £ 4,561,154 | |
| 13758 | Mapletree | £ 251,722,034 | |
| 13759 | Mapple | £ 7,653,759 | |
| 13760 | Maps | £ 499,111,794 | |
| 13761 | Mar MB | £ 59,938,508 | |
| 13762 | Mara Salvatrucha | £ 776,476,046 | |
| 13763 | Marathon | £ 59,899,042 | |
| 13764 | Marathon Runner | £ 58,033,010 | |
| 13765 | Marauders Inc | £ 4,803,396 | |
| 13766 | Marble Nook | £ -8,707,095 | |
| 13767 | Marbles | £ 336,923,960 | |
| 13768 | Marc Enterprises | £ 25,832,788 | |
| 13769 | Marcandmoles5 | £ 4,486,455 | |
| 13770 | March | £ 6,102,999 | |
| 13771 | March Madness | £ 200,000 | |
| 13772 | Marching-Affair | £ 9,711,202,901 | |
| 13773 | Marching-Again | £ 1,729,189,416 | |
| 13774 | Marco Inc | £ 12,220,734 | |
| 13775 | Marco Marketing | £ 350,613,978 | |
| 13776 | Marco Simoncelli | £ 1,001,318,886 | |
| 13777 | Marcome Inc | £ -205,648 | |
| 13778 | Marcomm Inc | £ 5,254,390 | |
| 13779 | Mardi Gras | £ 19,868,992 | |
| 13780 | Mare Nubium | £ 217,810,294 | |
| 13781 | Mareals Beneficence | £ 10,471,098 | |
| 13782 | Margaret Thatcher | £ 63,413,613 | |
| 13783 | Marges | £ 978,012,084 | |
| 13784 | Margot | £ 49,998,654 | |
| 13785 | Maria Vistablo | £ 96,352,474 | |
| 13786 | Marian | £ 10,841,138,789 | |
| 13787 | Mariana Trench | £ 1,394,594,580 | |
| 13788 | Marianas Trench | £ 281,151,605 | |
| 13789 | Marijuana | £ 139,330,510 | |
| 13790 | Marijuana Land | £ 50,000 | |
| 13791 | Marillion | £ 1,189,100,158 | |
| 13792 | Marilyn Manson | £ 57,542,342 | |
| 13793 | Marilyn Monroe | £ 187,488,004 | |
| 13794 | Mario | £ 148,719,211 | |
| 13795 | Mario Bros. Plumbing | £ 82,439,696 | |
| 13796 | Mario Brothers Plumbing | £ 5,252,769 | |
| 13797 | Marion Morrison | £ 127,909,303 | |
| 13798 | Mariqueen | £ 133,474,138 | |
| 13799 | Maritime Fish Factory | £ 2,719,055 | |
| 13800 | mark | £ 129,012,793 | |
