The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12001 | Mau5trap | £ 939,845 | |
| 12002 | Mauro | £ 5,504,457 | |
| 12003 | mauro mania | £ 50,000 | |
| 12004 | maurotech | £ 548,809 | |
| 12005 | Mauve en Wit | £ 24,014,076 | |
| 12006 | Maverick Inc | £ 14,453,208 | |
| 12007 | Maverick Trouble Inc | £ 37,638,244 | |
| 12008 | Mavs | £ -158,119 | |
| 12009 | Maw | £ 5,504,812 | |
| 12010 | MaWahhh | £ 90,231,150 | |
| 12011 | MawkiMawki | £ 6,983,736 | |
| 12012 | Max Cash Grab Stuff Inc | £ 4,492,788 | |
| 12013 | Max Pain | £ 135,911,956 | |
| 12014 | Max Power | £ 113,331,826 | |
| 12015 | MaxAttack Ltd | £ 773,584 | |
| 12016 | Maxima | £ 9,994,577 | |
| 12017 | Maximas | £ 50,000 | |
| 12018 | Maximum | £ -2,213,330 | |
| 12019 | Maximum Force | £ 756,904,724 | |
| 12020 | Maximum Profit | £ 5,583,604 | |
| 12021 | MaximumRetaliation | £ 345,639 | |
| 12022 | Maximus Inc | £ -27,673 | |
| 12023 | maximus industries | £ 52,863,673 | |
| 12024 | Maximus Pyrotechnics | £ -22,809,232 | |
| 12025 | Maximus Storage | £ 4,310,218 | |
| 12026 | Maximuscle | £ 3,759,106 | |
| 12027 | Maxxis | £ 2,547,439 | |
| 12028 | May | £ 321,223,063 | |
| 12029 | May Day | £ 10,362,997 | |
| 12030 | May Hay | £ 6,903,268 | |
| 12031 | may help | £ 23,308,617 | |
| 12032 | Maya | £ 855,761,493 | |
| 12033 | Mayans | £ 28,668,150 | |
| 12034 | Maybach Music | £ 12,470,379 | |
| 12035 | Mayhem | £ 116,618,582 | |
| 12036 | Mayoland Inc. | £ -390,754 | |
| 12037 | Maz1 | £ 4,123,280 | |
| 12038 | Maz2 | £ 4,145,139 | |
| 12039 | Maz3 | £ 4,137,031 | |
| 12040 | Maz4 | £ 4,101,386 | |
| 12041 | Maziacs | £ 214,690,206 | |
| 12042 | MazManInc | £ 258,718 | |
| 12043 | mbm | £ 81,202,527 | |
| 12044 | Mc Dowells 2.0 | £ 14,294,011 | |
| 12045 | mc3 | £ 62,358,543 | |
| 12046 | McBombFace | £ 3,871,640 | |
| 12047 | Mcboobs Knocking Shops | £ 27,084 | |
| 12048 | mcbuttface | £ 3,955,729 | |
| 12049 | McCann Ind | £ -29,449 | |
| 12050 | McCon Inc. | £ 82,346,992 | |
| 12051 | McCormick Enterprises | £ 704,217 | |
| 12052 | McDAB | £ 76,475,382 | |
| 12053 | McDonald | £ 3,198,808 | |
| 12054 | McDonalds | £ 18,885,463 | |
| 12055 | Mcdonalds Corporation | £ 134,518,979 | |
| 12056 | McDonaldsZim | £ 63,176,931 | |
| 12057 | McDumponface | £ 3,660 | |
| 12058 | McFadden | £ -131,571 | |
| 12059 | Mcfc88 | £ 10,404,015 | |
| 12060 | McGarrett | £ 193,129,471 | |
| 12061 | McGeeters | £ 83,681 | |
| 12062 | McGill | £ 18,031,195 | |
| 12063 | McGirk Waste Management | £ 86,656 | |
| 12064 | MCI Communications | £ 134,374,955 | |
| 12065 | Mckutchen | £ 1,830,803 | |
| 12066 | Mclaren Mercedes | £ 2,778,685 | |
| 12067 | McLovin | £ 2,299,983 | |
| 12068 | mcm | £ 57,999,853 | |
| 12069 | McNasty Burgers | £ 61,139,769 | |
| 12070 | McNuthugger | £ 5,002,136 | |
| 12071 | MCOC | £ 56,966,011 | |
| 12072 | Mcsmash | £ -11,927 | |
| 12073 | MDD Company | £ 34,883,687 | |
| 12074 | MDD3 company | £ 52,874,397 | |
| 12075 | MDD4 company | £ 39,561,399 | |
| 12076 | MDMA | £ 58,653,746 | |
| 12077 | Mdog 4 life | £ 233,659,584 | |
| 12078 | Mdog Enterprises | £ 164,256,199 | |
| 12079 | MDW Business | £ 5,507,240 | |
| 12080 | Me Against The World | £ 50,000 | |
| 12081 | Me And I | £ 629,795 | |
| 12082 | me corp | £ 2,801,416 | |
| 12083 | Me crack in | £ 131,344,322 | |
| 12084 | me free | £ 367,615,854 | |
| 12085 | Me Only | £ 4,926,881 | |
| 12086 | Me Please | £ 82,095,731 | |
| 12087 | Me Silly | £ 106,123,518 | |
| 12088 | Me to see | £ 62,947,323 | |
| 12089 | Me, Im Counting | £ 4,820,143,977 | |
| 12090 | MEA | £ 356,839,045 | |
| 12091 | Meadow | £ 349,035,541 | |
| 12092 | Meal Time | £ 53,033,234 | |
| 12093 | Mean and Deadly LTD | £ 10,098,464 | |
| 12094 | Mean Electricity Ltd | £ -5,065,941 | |
| 12095 | Mean Machine | £ 174,484,012 | |
| 12096 | Mean Machine 10 | £ 101,887,250 | |
| 12097 | Mean Machine 11 | £ 83,273,024 | |
| 12098 | Mean Machine 12 | £ 24,847,409 | |
| 12099 | Mean Machine 2 | £ 112,632,517 | |
| 12100 | Mean Machine 3 | £ 125,726,960 | |
