The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12301 | MactheKnife | £ 12,601,969 | |
| 12302 | Macwill | £ 5,259,176 | |
| 12303 | macwill2285 | £ 9,334,215 | |
| 12304 | MAD AS HELL | £ 2,349,476 | |
| 12305 | Mad Cow Disease | £ 367,617,936 | |
| 12306 | Mad Dog Coll | £ 23,353,733 | |
| 12307 | Mad Dog Enterprise | £ 32,168,238 | |
| 12308 | Mad Dog Ltd | £ 50,000 | |
| 12309 | Mad Dogg Money | £ 65,796,411 | |
| 12310 | Mad Dogs | £ 57,790,153 | |
| 12311 | Mad Fortunate | £ 50,000 | |
| 12312 | madamada | £ 233,630 | |
| 12313 | Madd Dogg 2020 | £ 10,742,409 | |
| 12314 | MadDogHoldings | £ 5,043,725 | |
| 12315 | Maddy Moo | £ 115,199,118 | |
| 12316 | Made a better decision | £ 51,894,350 | |
| 12317 | Made in Brazil | £ 61,550,105 | |
| 12318 | Made in canada | £ 5,496,632 | |
| 12319 | Made in China | £ 60,382,429 | |
| 12320 | Made in India | £ 18,870,885 | |
| 12321 | made it | £ 9,045,642 | |
| 12322 | madeds | £ 95,442 | |
| 12323 | Madeira Inc | £ 131,914,835 | |
| 12324 | MadHatter | £ -238,315 | |
| 12325 | Madison Square Gardens | £ 1,030,811,509 | |
| 12326 | MadMafia | £ 132,483,479 | |
| 12327 | madman enterprise | £ 2,426,958 | |
| 12328 | madmen | £ 2,133,394,509 | |
| 12329 | Madness | £ 6,736,333 | |
| 12330 | Madness Holdings | £ 6,130,507 | |
| 12331 | Madness Inc | £ 71,179,360 | |
| 12332 | MadridCo | £ 63,090,434 | |
| 12333 | Madtax | £ 60,599,818 | |
| 12334 | Maelstrom | £ 74,490 | |
| 12335 | Maes | £ 5,506,699 | |
| 12336 | Maestro Inc | £ 10,020,096 | |
| 12337 | Maestro1 | £ 4,806,635 | |
| 12338 | Maestro3 | £ 50,000 | |
| 12339 | MaFFia | £ 120,981,690 | |
| 12340 | Mafia | £ 1,753,185 | |
| 12341 | Mafia Company | £ 30,978,732 | |
| 12342 | Mafia Enterprises | £ 8,427,838 | |
| 12343 | Mafia Mexicana | £ 535,846,768 | |
| 12344 | mafism | £ 22,493,332 | |
| 12345 | Mag1c | £ 9,025,059 | |
| 12346 | MAGA | £ 149,392,802 | |
| 12347 | Magazine Distributors | £ 37,320,017 | |
| 12348 | Magdalene | £ 1,003,412,911 | |
| 12349 | Magellan of Voyage | £ 5,290,991 | |
| 12350 | Magenta Weed | £ 271,410,952 | |
| 12351 | Maggic7 | £ -443,731 | |
| 12352 | Magic | £ 487,337,098 | |
| 12353 | Magic Carpet | £ 11,874,743 | |
| 12354 | Magic Emporium | £ 103,205,187 | |
| 12355 | Magic Industries | £ -1,643 | |
| 12356 | Magic Mirror | £ 2,172,047 | |
| 12357 | Magic Monkeyz | £ 8,114,425 | |
| 12358 | Magic Mountain | £ 85,357,480 | |
| 12359 | Magic Mushrooms | £ 160,108,013 | |
| 12360 | Magic Pie | £ 490,215,342 | |
| 12361 | Magic Rock Garden | £ 88,058,735 | |
| 12362 | Magic Round About | £ 60,232,415 | |
| 12363 | Magic Roundabout | £ 5,733,823 | |
| 12364 | Magic Tricks | £ 217,218,007 | |
| 12365 | Magic Unicorns | £ 5,507,889 | |
| 12366 | Magician | £ 43,263,578 | |
| 12367 | MagicMan LTD | £ 47,892,453 | |
| 12368 | magics | £ 66,831,911 | |
| 12369 | Magik | £ 8,435,088 | |
| 12370 | Magikarp | £ 54,441,892 | |
| 12371 | magma | £ 256,976,687 | |
| 12372 | Magnag Industries | £ 5,423,817 | |
| 12373 | Magnesia | £ 49,545,385 | |
| 12374 | Magnesium | £ -10,504,907 | |
| 12375 | Magnet and Steel | £ 48,470,139 | |
| 12376 | Magneto | £ 45,020,225 | |
| 12377 | Magneto. | £ 56,969,562 | |
| 12378 | Magnets | £ 52,989,538 | |
| 12379 | Magnolia Properties | £ 5,505,968 | |
| 12380 | Magnum P.I. | £ 4,478,573,315 | |
| 12381 | Magnus Global | £ 79,802,258 | |
| 12382 | MagnusCorp | £ 56,468,260 | |
| 12383 | Magoo | £ 17,276,464 | |
| 12384 | Magoos | £ 35,729,833 | |
| 12385 | Magpie | £ 5,500,937 | |
| 12386 | Magrathea | £ 54,106,264 | |
| 12387 | Mags Estate | £ 5,508,790 | |
| 12388 | Mags Ltd | £ 4,552,528 | |
| 12389 | Mags Summer | £ 5,708,628 | |
| 12390 | Mai Kao Jai | £ 38,479,227 | |
| 12391 | Maicibai | £ 47,404,486 | |
| 12392 | Maid | £ 25,627,043 | |
| 12393 | £ 399,681,500 | ||
| 12394 | Main Force Patrol | £ 32,257,237 | |
| 12395 | Maintenance | £ 256,958,172 | |
| 12396 | major proportions | £ 330,952,609 | |
| 12397 | Major Space Crossroutes | £ 172,096,115 | |
| 12398 | Major Suite | £ 17,697 | |
| 12399 | Makaveli | £ 59,162,119 | |
| 12400 | Makaveli II | £ 44,201,619 | |
