The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13401 | Mistree | £ 50,000 | |
| 13402 | Mitchell Ltd | £ -2,115,101 | |
| 13403 | Mitchell Ltd2 | £ -1,529,234 | |
| 13404 | Mitchell Ltd3 | £ 5,496,523 | |
| 13405 | Mitchell Ltd4 | £ 4,625,817 | |
| 13406 | Mithandir | £ 396,337,517 | |
| 13407 | Mitigating Circumstances | £ 162,513,039 | |
| 13408 | Mitres | £ 684,354,522 | |
| 13409 | Mizuko Holdings | £ 50,000 | |
| 13410 | MJHCo. | £ 81,836,520 | |
| 13411 | MJI | £ 5,141,163 | |
| 13412 | MJII | £ 1,514,759 | |
| 13413 | MJIII | £ 1,341,503 | |
| 13414 | MJIV | £ 334,370 | |
| 13415 | MJJ Incorporated | £ 1,023,622,671 | |
| 13416 | MJLee | £ 12,045,209 | |
| 13417 | MJM 2 | £ 50,000 | |
| 13418 | MJM Games | £ 921,860 | |
| 13419 | Mjolnir | £ 7,545,765,008 | |
| 13420 | MK II | £ -371,982 | |
| 13421 | MK Ultra | £ -17,913,353 | |
| 13422 | Mk11 | £ 166,091,598 | |
| 13423 | MKL | £ 4,926,291,030 | |
| 13424 | mkyumku | £ 1,322,486 | |
| 13425 | mlawenterprise | £ 206,267,702 | |
| 13426 | mlawenterprises | £ 74,433,740 | |
| 13427 | MLH Industries | £ 31,163,815 | |
| 13428 | MLM | £ 25,555,882,546 | |
| 13429 | MLM Group | £ 153,402,015 | |
| 13430 | MM Holdings | £ 335,753,516 | |
| 13431 | MM Holdings 2 | £ 43,351,245 | |
| 13432 | MM Holdings 3 | £ 69,430,864 | |
| 13433 | MM Holdings 4 | £ 80,695,586 | |
| 13434 | MMA | £ 8,755,358 | |
| 13435 | MMI | £ 3,194,811 | |
| 13436 | MMI Holdings | £ 2,450,207 | |
| 13437 | MMI2 | £ 4,617,014 | |
| 13438 | MMI3 | £ 161,241 | |
| 13439 | mmmHHHMmm | £ 1,268,288 | |
| 13440 | MMMM CAKE | £ 11,700,419 | |
| 13441 | MMORPG | £ 386,202,529 | |
| 13442 | MMS | £ 728,736 | |
| 13443 | MN Painting | £ 69,865,838 | |
| 13444 | mnb | £ 5,869,704 | |
| 13445 | MNGA | £ -591,189 | |
| 13446 | Mo Alba | £ 497,470,179 | |
| 13447 | moarbkup | £ 5,508,731 | |
| 13448 | moarCarparks | £ 5,546,279 | |
| 13449 | MOASS | £ 10,968,075 | |
| 13450 | Mob Life Inc | £ 5,489,924 | |
| 13451 | Mob Mentality | £ 3,456,883 | |
| 13452 | Mob Rule | £ 187,313,616 | |
| 13453 | Mobbin Service | £ 37,804,870 | |
| 13454 | Mochrum | £ 581,626,590 | |
| 13455 | Mockingbird Heights | £ 268,069,589 | |
| 13456 | Mod786 | £ 28,058,765 | |
| 13457 | Mod7866 | £ 5,631,868 | |
| 13458 | model | £ 126,900,274 | |
| 13459 | Model 1910 | £ 15,519,029 | |
| 13460 | Model in Black | £ 32,036,184 | |
| 13461 | model1 | £ 298,042,055 | |
| 13462 | Moderate Pharmaceuticals | £ 7,403,273 | |
| 13463 | Modern Chemistry | £ 50,000 | |
| 13464 | Modern Day Filth | £ 39,727,103 | |
| 13465 | modern homes and windows | £ 61,033,378 | |
| 13466 | Modus operandi | £ 267,462,382 | |
| 13467 | mog | £ 62,817,831 | |
| 13468 | MoguMogu | £ 50,000 | |
| 13469 | Mogwai | £ 2,666,868,407 | |
| 13470 | Mohawk | £ 5,884,779 | |
| 13471 | mohicans | £ 87,704,089 | |
| 13472 | MoIIy | £ 22,448,748 | |
| 13473 | MoIly | £ 15,318,712 | |
| 13474 | Moist Industries | £ 375,651,044 | |
| 13475 | Mojacar | £ 141,096,958 | |
| 13476 | MojoMonies | £ -11,896,511 | |
| 13477 | molenstraat | £ 2,013,822 | |
| 13478 | Molko | £ 88,524,189 | |
| 13479 | Molly | £ 58,389,036 | |
| 13480 | Molokozavod | £ 8,147,120 | |
| 13481 | Molotov | £ 4,678,705,578 | |
| 13482 | Moltara | £ 54,192,732 | |
| 13483 | Moltisanti | £ 88,259,217 | |
| 13484 | Moltke Enterprises | £ 58,439,943 | |
| 13485 | mom | £ 316,315,222 | |
| 13486 | MomCorp | £ 1,768,330 | |
| 13487 | Moment | £ 50,000 | |
| 13488 | Moments | £ 63,735,380 | |
| 13489 | momhap | £ 63,911,927 | |
| 13490 | MommaJune | £ 5,871,123 | |
| 13491 | MOMOO | £ 147,977 | |
| 13492 | Moms diner | £ 125,413 | |
| 13493 | Mon | £ 8,704,871 | |
| 13494 | Mona Lisa | £ 7,550,677 | |
| 13495 | Monaco | £ 43,667,263 | |
| 13496 | Monarch | £ 934,949 | |
| 13497 | Monarchic | £ 27,179,904 | |
| 13498 | Moncrot | £ 2,803,567 | |
| 13499 | Moncton | £ 577,953,358 | |
| 13500 | Monetary Policy | £ -1,515,538 | |
