The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13501 | madeds | £ 95,442 | |
| 13502 | Madeira Inc | £ 131,914,835 | |
| 13503 | MadHatter | £ -238,315 | |
| 13504 | Madison Square Gardens | £ 1,169,031,756 | |
| 13505 | MadMafia | £ 132,483,479 | |
| 13506 | madman enterprise | £ 2,426,958 | |
| 13507 | madmen | £ 2,133,394,509 | |
| 13508 | Madness | £ 6,736,333 | |
| 13509 | Madness Holdings | £ 120,796 | |
| 13510 | Madness Inc | £ 71,179,360 | |
| 13511 | MadridCo | £ 63,090,434 | |
| 13512 | Madtax | £ 60,599,818 | |
| 13513 | Maelstrom | £ 74,490 | |
| 13514 | Maes | £ 5,506,699 | |
| 13515 | Maestro Inc | £ 10,020,096 | |
| 13516 | Maestro1 | £ 9,268,941 | |
| 13517 | Maestro3 | £ 50,000 | |
| 13518 | MaFFia | £ 178,667,963 | |
| 13519 | Mafia | £ 1,753,185 | |
| 13520 | Mafia Company | £ 30,978,732 | |
| 13521 | Mafia Enterprises | £ 8,427,838 | |
| 13522 | Mafia Mexicana | £ 579,567,327 | |
| 13523 | mafism | £ 22,493,332 | |
| 13524 | Mag1c | £ 9,025,059 | |
| 13525 | MAGA | £ 149,392,802 | |
| 13526 | Magazine Distributors | £ 37,320,017 | |
| 13527 | Magdalene | £ 1,003,412,911 | |
| 13528 | Magellan of Voyage | £ 5,290,991 | |
| 13529 | Magenta Weed | £ 271,410,952 | |
| 13530 | Maggic7 | £ -443,731 | |
| 13531 | Magic | £ 487,337,098 | |
| 13532 | Magic Carpet | £ 11,874,743 | |
| 13533 | Magic Emporium | £ 103,205,187 | |
| 13534 | Magic Industries | £ -1,643 | |
| 13535 | Magic Mirror | £ 2,172,047 | |
| 13536 | Magic Monkeyz | £ 8,114,425 | |
| 13537 | Magic Mountain | £ 72,113,974 | |
| 13538 | Magic Mushrooms | £ 160,108,013 | |
| 13539 | Magic Pie | £ 490,215,342 | |
| 13540 | Magic Rock Garden | £ 88,058,735 | |
| 13541 | Magic Round About | £ 60,232,415 | |
| 13542 | Magic Roundabout | £ 5,733,823 | |
| 13543 | Magic Roundabout 2 | £ 8,337,201 | |
| 13544 | Magic Tricks | £ 181,144,458 | |
| 13545 | Magic Unicorns | £ 5,507,889 | |
| 13546 | Magician | £ 43,263,578 | |
| 13547 | MagicMan LTD | £ 74,915,779 | |
| 13548 | magics | £ 89,717,576 | |
| 13549 | Magik | £ 8,435,088 | |
| 13550 | Magikarp | £ 54,441,892 | |
| 13551 | magma | £ 256,976,687 | |
| 13552 | Magnag Industries | £ 5,423,817 | |
| 13553 | Magnesia | £ 49,545,385 | |
| 13554 | Magnesium | £ -10,504,907 | |
| 13555 | Magnetic Flux Density | £ 53,513,845 | |
| 13556 | Magneto. | £ 41,525,507 | |
| 13557 | Magnets | £ 52,223,211 | |
| 13558 | Magnolia Properties | £ 5,505,968 | |
| 13559 | Magnum P.I. | £ 4,478,573,315 | |
| 13560 | Magnus | £ 9,726,515 | |
| 13561 | Magnus Global | £ 79,802,258 | |
| 13562 | MagnusCorp | £ 56,468,260 | |
| 13563 | Magoo | £ 17,276,464 | |
| 13564 | Magoos | £ 35,729,833 | |
| 13565 | Magpie | £ 172,943,574 | |
| 13566 | Magrathea | £ 54,106,264 | |
| 13567 | Mags Estate | £ 5,508,790 | |
| 13568 | Mags Ltd | £ 4,552,528 | |
| 13569 | Mags Summer | £ 5,708,628 | |
| 13570 | Mah Na Mah Na | £ 51,130,458 | |
| 13571 | Mai Kao Jai | £ 38,479,227 | |
| 13572 | Maicibai | £ 47,404,486 | |
| 13573 | Maid | £ 155,417,138 | |
| 13574 | £ 557,033,889 | ||
| 13575 | Main | £ 63,165,525 | |
| 13576 | Main Force Patrol | £ 32,257,237 | |
| 13577 | Maintenance | £ 619,311,696 | |
| 13578 | Majic | £ 25,759,014 | |
| 13579 | Majic Mushrooms | £ 54,504,646 | |
| 13580 | Major Consequences | £ 2,487,600 | |
| 13581 | major proportions | £ 330,952,609 | |
| 13582 | Major Space Crossroutes | £ 167,618,040 | |
| 13583 | Major Suite | £ 17,697 | |
| 13584 | Major Tom | £ 48,064,970 | |
| 13585 | Make America Great Again | £ 5,508,261 | |
| 13586 | Make Gotham Great | £ 134,979,354 | |
| 13587 | make money | £ 4,810,592 | |
| 13588 | Make Netro Great | £ 3,983,342 | |
| 13589 | make this yet | £ 90,110,795 | |
| 13590 | makeofthis | £ 134,245,142 | |
| 13591 | Maker Inc. | £ 2,239,625 | |
| 13592 | Makes Me Feel Fine | £ 64,773,514 | |
| 13593 | Making America Great | £ 164,451,564 | |
| 13594 | Making Pennies | £ 92,844,685 | |
| 13595 | making so many | £ 85,241,085 | |
| 13596 | Mako | £ 10,829,833 | |
| 13597 | Maks a Muckle | £ 938,220,068 | |
| 13598 | Malak.Co | £ -47,512 | |
| 13599 | Malaria | £ 5,469,578 | |
| 13600 | Malawi | £ 178,768,230 | |
