The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13501 | Magnesia | £ 49,545,385 | |
| 13502 | Magnesium | £ -10,504,907 | |
| 13503 | Magneto | £ 45,020,225 | |
| 13504 | Magneto. | £ 41,525,507 | |
| 13505 | Magnets | £ 58,851,014 | |
| 13506 | Magnolia Properties | £ 5,505,968 | |
| 13507 | Magnum P.I. | £ 4,478,573,315 | |
| 13508 | Magnus Global | £ 79,802,258 | |
| 13509 | MagnusCorp | £ 56,468,260 | |
| 13510 | Magoo | £ 17,276,464 | |
| 13511 | Magoos | £ 35,729,833 | |
| 13512 | Magpie | £ 89,545,134 | |
| 13513 | Magrathea | £ 54,106,264 | |
| 13514 | Mags Estate | £ 5,508,790 | |
| 13515 | Mags Ltd | £ 4,552,528 | |
| 13516 | Mags Summer | £ 5,708,628 | |
| 13517 | Mai Kao Jai | £ 38,479,227 | |
| 13518 | Maicibai | £ 47,404,486 | |
| 13519 | Maid | £ 155,417,138 | |
| 13520 | £ 539,368,517 | ||
| 13521 | Main | £ 3,175,361 | |
| 13522 | Main Force Patrol | £ 32,257,237 | |
| 13523 | Maintenance | £ 553,311,696 | |
| 13524 | Majic | £ 20,301,691 | |
| 13525 | Majic Mushrooms | £ 50,000 | |
| 13526 | major proportions | £ 330,952,609 | |
| 13527 | Major Space Crossroutes | £ 167,618,040 | |
| 13528 | Major Suite | £ 17,697 | |
| 13529 | Major Tom | £ 6,967,796 | |
| 13530 | Makaveli | £ 59,162,119 | |
| 13531 | Makaveli II | £ 44,201,619 | |
| 13532 | Make America Great Again | £ 5,508,261 | |
| 13533 | Make Gotham Great | £ 134,979,354 | |
| 13534 | make money | £ 4,810,592 | |
| 13535 | Make Netro Great | £ 3,983,342 | |
| 13536 | make this yet | £ 90,110,795 | |
| 13537 | makeofthis | £ 134,245,142 | |
| 13538 | Maker Inc. | £ 2,239,625 | |
| 13539 | Makes Me Feel Fine | £ 64,773,514 | |
| 13540 | Making America Great | £ 164,451,564 | |
| 13541 | Making Pennies | £ 92,844,685 | |
| 13542 | making so many | £ 85,241,085 | |
| 13543 | Mako | £ 10,829,833 | |
| 13544 | Maks a Muckle | £ 938,220,068 | |
| 13545 | Malak.Co | £ -47,512 | |
| 13546 | Malaria | £ 1,959,297 | |
| 13547 | Malawi | £ 178,768,230 | |
| 13548 | Malaysia | £ 59,026,830 | |
| 13549 | MalCo | £ 16,148,870 | |
| 13550 | Malcontent | £ 110,148,082 | |
| 13551 | Malevolence | £ 1,704,444,541 | |
| 13552 | malformed creature | £ 267,031,614 | |
| 13553 | Malice | £ 1,593,354,359 | |
| 13554 | Malicious Intent | £ 55,421,858 | |
| 13555 | Malignant Mutt | £ 55,594,011 | |
| 13556 | Malik Inc. | £ 43,598 | |
| 13557 | Malinois Inc | £ 112,063,766 | |
| 13558 | Maliwan Munitions | £ 43,582,998 | |
| 13559 | Malkowitz Industries | £ 303,579,424 | |
| 13560 | Mall | £ 33,937,859 | |
| 13561 | Mallard | £ 47,485,699 | |
| 13562 | Malt Liquor Hulk | £ 118,548,903 | |
| 13563 | Malta | £ 5,500,838 | |
| 13564 | Maltesers | £ 54,432,517 | |
| 13565 | Maltou Avenue | £ 4,176,354 | |
| 13566 | Maluku Inc. | £ 32,601,576 | |
| 13567 | MAMA | £ 10,429,149 | |
| 13568 | Mama Said Knock You Out | £ 239,813,209 | |
| 13569 | mamamiah | £ 7,580,475 | |
| 13570 | mamamiahah | £ 73,270,710 | |
| 13571 | Mamba | £ 46,849,208 | |
| 13572 | Mambeast Pte Ltd | £ -17,776,530 | |
| 13573 | mami | £ 10,204,605 | |
| 13574 | Mammaries | £ 443,603,860 | |
| 13575 | Mammi | £ 42,251,220 | |
| 13576 | Mammiiah | £ 6,959,891 | |
| 13577 | Mammon | £ 5,509,324 | |
| 13578 | mammoth proportions | £ 503,376,369 | |
| 13579 | mams secret milk | £ 5,504,304 | |
| 13580 | Man | £ 17,801,890 | |
| 13581 | Man 53 | £ 28,656,765 | |
| 13582 | Man Chu | £ 58,613 | |
| 13583 | Man Flu | £ 5,664,188 | |
| 13584 | Man in the Mirror | £ 20,566,211 | |
| 13585 | Man Kind | £ 100,281,734 | |
| 13586 | Man Lab | £ 2,388,802 | |
| 13587 | Man Standing | £ 61,229,783 | |
| 13588 | Mana | £ 199,521 | |
| 13589 | managed | £ 272,908,637 | |
| 13590 | Manaus | £ 257,899,725 | |
| 13591 | ManBearPig | £ 502,877,277 | |
| 13592 | ManChat | £ 24,921,317 | |
| 13593 | Manchester | £ 303,684,849 | |
| 13594 | Manchester City fc | £ 29,318,533 | |
| 13595 | Manchester Mayhem | £ 84,056 | |
| 13596 | manchester united | £ 5,711,474 | |
| 13597 | Manchester United F.C. | £ 6,000,547,761 | |
| 13598 | Manchester United XI | £ 5,357,466 | |
| 13599 | Manchester Unitedfc | £ -1,131,040 | |
| 13600 | Manco Capac | £ 2,037,711,203 | |
