The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 10401 | Mana | £ 199,521 | |
| 10402 | managed | £ 3,981,356 | |
| 10403 | Manaus | £ 257,899,725 | |
| 10404 | ManBearPig | £ 502,877,277 | |
| 10405 | ManChat | £ 24,921,317 | |
| 10406 | Manchester | £ 300,684,849 | |
| 10407 | Manchester Mayhem | £ 84,056 | |
| 10408 | manchester united | £ 5,711,474 | |
| 10409 | Manchester United XI | £ 5,357,466 | |
| 10410 | Manco Capac | £ 2,037,711,203 | |
| 10411 | Mancunia | £ -32,487 | |
| 10412 | Mancunia 2 | £ 138,386 | |
| 10413 | Mandalay Bay | £ 6,146,133 | |
| 10414 | Mandelbrot Set | £ 317,179,042 | |
| 10415 | mang | £ 2,904,476 | |
| 10416 | manginas | £ 46,000 | |
| 10417 | Mangle Inc | £ 16,870,733 | |
| 10418 | Mango Escapade | £ 62,454,265 | |
| 10419 | Mango incorporated | £ 76,448 | |
| 10420 | Manhattan Project | £ 67,727,259 | |
| 10421 | mania | £ 311,404,918 | |
| 10422 | Maniac Express | £ 24,619,316 | |
| 10423 | Manic Miner | £ 81,614,358 | |
| 10424 | Manities | £ 55,292,484 | |
| 10425 | Mankind | £ 170,883,979 | |
| 10426 | Manly Living | £ 2,808,857 | |
| 10427 | ManManMan | £ 38,206,350 | |
| 10428 | Mannanin Co | £ 8,845,526 | |
| 10429 | Mans Best Friend | £ 279,475,422 | |
| 10430 | Mans World | £ 103,865,359 | |
| 10431 | Mansell Industries Ltd. | £ 2,299,922,271 | |
| 10432 | Mansfield Bitter | £ 397,755,385 | |
| 10433 | Manta | £ 7,067,125,870 | |
| 10434 | Manta. | £ 21,707,124 | |
| 10435 | mantis | £ 5,463,181 | |
| 10436 | Manu upon avon | £ 1,056,762 | |
| 10437 | manu-de-janeiro | £ 12,962,879 | |
| 10438 | manu-upon-avon | £ 106,781,988 | |
| 10439 | manu-upon-avon2 | £ 7,786,748 | |
| 10440 | manu-upon-tyne | £ 12,073,546 | |
| 10441 | Manual Shift | £ 514,808,382 | |
| 10442 | Many | £ 5,464,758 | |
| 10443 | Many acres | £ 481,944,340 | |
| 10444 | many companies | £ 64,173,944 | |
| 10445 | Many Ends | £ 10,771,456 | |
| 10446 | Many Fossil Fuels | £ 55,702,842 | |
| 10447 | Many houses | £ 304,111,312 | |
| 10448 | Many Monies Corporation | £ 50,000 | |
| 10449 | Many more | £ 62,287,354 | |
| 10450 | Many mushrooms | £ -14,428,318 | |
| 10451 | Many Mysteries | £ 765,679 | |
| 10452 | many numbers | £ 43,995,214 | |
| 10453 | Many Years | £ 380,300 | |
| 10454 | Manytimesusedpubbucket | £ 5,530,466 | |
| 10455 | Maolina | £ 6,447,323 | |
| 10456 | Maose BV | £ 46,741 | |
| 10457 | Maosim | £ 62,212,646 | |
| 10458 | Map Flateners | £ 66,340,384 | |
| 10459 | Maple Leaf | £ 9,272,710 | |
| 10460 | Maple Syrup | £ 53,276,118 | |
| 10461 | Maple Syrup Monsters | £ 5,683,586 | |
| 10462 | MapleGrove | £ 483,977 | |
| 10463 | Mapleton Corp | £ 4,561,154 | |
| 10464 | MapleTree | £ 95,287,088 | |
| 10465 | Mapple | £ 7,653,759 | |
| 10466 | Mar | £ 3,166,311,646 | |
| 10467 | Mar MB | £ 59,938,508 | |
| 10468 | Mara Salvatrucha | £ 440,730,837 | |
| 10469 | Marathon | £ 59,899,042 | |
| 10470 | Marathon Runner | £ 58,033,010 | |
| 10471 | Marauders Inc | £ 4,803,396 | |
| 10472 | Marbles | £ 241,954,652 | |
| 10473 | Marc Enterprises | £ 25,832,788 | |
| 10474 | Marcandmoles5 | £ 4,486,455 | |
| 10475 | March | £ 6,102,999 | |
| 10476 | Marching-Affair | £ 9,701,603,338 | |
| 10477 | Marching-Again | £ 1,729,189,416 | |
| 10478 | Marco Inc | £ 7,330,897 | |
| 10479 | Marco Pierre White | £ 45,711,831 | |
| 10480 | Marco Simoncelli | £ 427,390,258 | |
| 10481 | Marcome Inc | £ -205,648 | |
| 10482 | Marcomm Inc | £ 5,254,390 | |
| 10483 | Mareals Beneficence | £ 5,020,666 | |
| 10484 | Margam | £ 581,332 | |
| 10485 | Margaret Thatcher | £ 63,413,613 | |
| 10486 | Marges | £ 978,012,084 | |
| 10487 | Marian | £ 10,711,464,810 | |
| 10488 | Marianas Trench | £ 362,582,082 | |
| 10489 | Marijuana | £ 139,330,510 | |
| 10490 | Marik Stelele | £ 1,645,091 | |
| 10491 | Marine Drive | £ 513,719,873 | |
| 10492 | Mario | £ 148,719,211 | |
| 10493 | Mario Bros. Plumbing | £ 21,346,748 | |
| 10494 | Marissa | £ 1,378,328,809 | |
| 10495 | Marissa 2 | £ 524,757,169 | |
| 10496 | Marissa 3 | £ 667,967,397 | |
| 10497 | Marissa 4 | £ 312,726,823 | |
| 10498 | Marissa 5 | £ 238,611,098 | |
| 10499 | Marissa 6 | £ 495,989,312 | |
| 10500 | Marissa 7 | £ 407,172,119 | |
