The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10501 | Manhattan Project | £ 94,244,080 | |
| 10502 | mania | £ 311,404,918 | |
| 10503 | Maniac Express | £ 24,619,316 | |
| 10504 | Manic Miner | £ 81,614,358 | |
| 10505 | Manities | £ 55,292,484 | |
| 10506 | Mankind | £ 170,883,979 | |
| 10507 | Manly Living | £ 2,808,857 | |
| 10508 | ManManMan | £ 38,206,350 | |
| 10509 | Mannanin Co | £ 8,845,526 | |
| 10510 | Mans Best Friend | £ 279,475,422 | |
| 10511 | Mans World | £ 103,865,359 | |
| 10512 | Mansell Industries Ltd. | £ 2,299,922,271 | |
| 10513 | Mansfield Bitter | £ 397,755,385 | |
| 10514 | Manta | £ 7,067,125,870 | |
| 10515 | Manta. | £ 21,707,124 | |
| 10516 | mantis | £ 5,463,181 | |
| 10517 | Manu upon avon | £ 1,056,762 | |
| 10518 | manu-de-janeiro | £ 12,962,879 | |
| 10519 | manu-upon-avon | £ 106,781,988 | |
| 10520 | manu-upon-avon2 | £ 7,786,748 | |
| 10521 | manu-upon-tyne | £ 12,073,546 | |
| 10522 | Manual Shift | £ 514,808,382 | |
| 10523 | Many | £ 5,464,758 | |
| 10524 | Many acres | £ 521,974,837 | |
| 10525 | many companies | £ 64,173,944 | |
| 10526 | Many Ends | £ 10,771,456 | |
| 10527 | Many Fossil Fuels | £ 55,702,842 | |
| 10528 | Many houses | £ 357,182,784 | |
| 10529 | Many Monies Corporation | £ 50,000 | |
| 10530 | Many more | £ 62,287,354 | |
| 10531 | Many mushrooms | £ -14,428,318 | |
| 10532 | Many Mysteries | £ 765,679 | |
| 10533 | many numbers | £ 43,995,214 | |
| 10534 | Many Years | £ 380,300 | |
| 10535 | Manytimesusedpubbucket | £ 5,530,466 | |
| 10536 | Maolina | £ 6,447,323 | |
| 10537 | Maose BV | £ 46,741 | |
| 10538 | Maosim | £ 62,212,646 | |
| 10539 | Map Flateners | £ 66,340,384 | |
| 10540 | Maple Leaf | £ 9,272,710 | |
| 10541 | Maple Syrup | £ 53,276,118 | |
| 10542 | Maple Syrup Monsters | £ 5,683,586 | |
| 10543 | MapleGrove | £ 483,977 | |
| 10544 | Mapleton Corp | £ 4,561,154 | |
| 10545 | MapleTree | £ 95,287,088 | |
| 10546 | Mapple | £ 7,653,759 | |
| 10547 | Mar | £ 3,166,311,646 | |
| 10548 | Mar MB | £ 59,938,508 | |
| 10549 | Mara Salvatrucha | £ 440,730,837 | |
| 10550 | Marathon | £ 59,899,042 | |
| 10551 | Marathon Runner | £ 58,033,010 | |
| 10552 | Marauders Inc | £ 4,803,396 | |
| 10553 | Marbles | £ 242,173,960 | |
| 10554 | Marc Enterprises | £ 25,832,788 | |
| 10555 | Marcandmoles5 | £ 4,486,455 | |
| 10556 | March | £ 6,102,999 | |
| 10557 | Marching-Affair | £ 9,701,603,338 | |
| 10558 | Marching-Again | £ 1,729,189,416 | |
| 10559 | Marco Inc | £ 7,330,897 | |
| 10560 | Marco Pierre White | £ 45,711,831 | |
| 10561 | Marco Simoncelli | £ 487,390,258 | |
| 10562 | Marcome Inc | £ -205,648 | |
| 10563 | Marcomm Inc | £ 5,254,390 | |
| 10564 | Marcus corp | £ 1,256,794 | |
| 10565 | Mareals Beneficence | £ 5,020,666 | |
| 10566 | Margam | £ 581,332 | |
| 10567 | Margaret Thatcher | £ 63,413,613 | |
| 10568 | Marges | £ 978,012,084 | |
| 10569 | Marian | £ 10,828,893,342 | |
| 10570 | Marianas Trench | £ 362,582,082 | |
| 10571 | Marijuana | £ 139,330,510 | |
| 10572 | Marik Stelele | £ 1,645,091 | |
| 10573 | Marine Drive | £ 513,719,873 | |
| 10574 | Mario | £ 148,719,211 | |
| 10575 | Mario Bros. Plumbing | £ 21,346,748 | |
| 10576 | Marissa | £ 1,378,328,809 | |
| 10577 | Marissa 2 | £ 524,757,169 | |
| 10578 | Marissa 3 | £ 667,967,397 | |
| 10579 | Marissa 4 | £ 312,726,823 | |
| 10580 | Marissa 5 | £ 238,611,098 | |
| 10581 | Marissa 6 | £ 495,989,312 | |
| 10582 | Marissa 7 | £ 407,172,119 | |
| 10583 | Marissa 8 | £ 425,196,899 | |
| 10584 | Marissa 9 | £ 548,552,830 | |
| 10585 | Marissa Love | £ 220,710,374 | |
| 10586 | Maritime Fish Factory | £ 2,719,055 | |
| 10587 | Mark Chapman | £ 54,086,382 | |
| 10588 | Mark Co | £ 529,484 | |
| 10589 | Market Spike | £ 1,374,802 | |
| 10590 | MarketLiquidity | £ 10,169,358 | |
| 10591 | Marley | £ 5,014,024 | |
| 10592 | Marlin inc | £ 1,915,058 | |
| 10593 | Marmalade | £ 18,033,582 | |
| 10594 | Marmara | £ 1,010,339,022 | |
| 10595 | Marraqueta | £ 138,405,177 | |
| 10596 | Marriages | £ 225,537,792 | |
| 10597 | Marrissasempire | £ 1,227,037 | |
| 10598 | Marrying The Mafia | £ 532,818 | |
| 10599 | Mars | £ 55,103,707 | |
| 10600 | Mars bars LTD | £ 117,272,299 | |
