The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 12901 | Madison Square Gardens | £ 1,103,936,784 | |
| 12902 | MadMafia | £ 132,483,479 | |
| 12903 | madman enterprise | £ 2,426,958 | |
| 12904 | madmen | £ 2,133,394,509 | |
| 12905 | Madness | £ 6,736,333 | |
| 12906 | Madness Holdings | £ 6,130,507 | |
| 12907 | Madness Inc | £ 71,179,360 | |
| 12908 | MadridCo | £ 63,090,434 | |
| 12909 | Madtax | £ 60,599,818 | |
| 12910 | Maelstrom | £ 74,490 | |
| 12911 | Maes | £ 5,506,699 | |
| 12912 | Maestro Inc | £ 10,020,096 | |
| 12913 | Maestro1 | £ 9,268,941 | |
| 12914 | Maestro3 | £ 50,000 | |
| 12915 | MaFFia | £ 125,251,935 | |
| 12916 | Mafia | £ 1,753,185 | |
| 12917 | Mafia Company | £ 30,978,732 | |
| 12918 | Mafia Enterprises | £ 8,427,838 | |
| 12919 | Mafia Mexicana | £ 535,846,768 | |
| 12920 | mafism | £ 22,493,332 | |
| 12921 | Mag1c | £ 9,025,059 | |
| 12922 | MAGA | £ 149,392,802 | |
| 12923 | Magazine Distributors | £ 37,320,017 | |
| 12924 | Magdalene | £ 1,003,412,911 | |
| 12925 | Magellan of Voyage | £ 5,290,991 | |
| 12926 | Magenta Weed | £ 271,410,952 | |
| 12927 | Maggic7 | £ -443,731 | |
| 12928 | Magic | £ 487,337,098 | |
| 12929 | Magic Carpet | £ 11,874,743 | |
| 12930 | Magic Emporium | £ 103,205,187 | |
| 12931 | Magic Industries | £ -1,643 | |
| 12932 | Magic Mirror | £ 2,172,047 | |
| 12933 | Magic Monkeyz | £ 8,114,425 | |
| 12934 | Magic Mountain | £ 72,113,974 | |
| 12935 | Magic Mushrooms | £ 160,108,013 | |
| 12936 | Magic Pie | £ 490,215,342 | |
| 12937 | Magic Rock Garden | £ 88,058,735 | |
| 12938 | Magic Round About | £ 60,232,415 | |
| 12939 | Magic Roundabout | £ 5,733,823 | |
| 12940 | Magic Tricks | £ 171,103,330 | |
| 12941 | Magic Unicorns | £ 5,507,889 | |
| 12942 | Magician | £ 43,263,578 | |
| 12943 | MagicMan LTD | £ 147,919,120 | |
| 12944 | magics | £ 169,700,855 | |
| 12945 | Magik | £ 8,435,088 | |
| 12946 | Magikarp | £ 54,441,892 | |
| 12947 | magma | £ 256,976,687 | |
| 12948 | Magnag Industries | £ 5,423,817 | |
| 12949 | Magnesia | £ 49,545,385 | |
| 12950 | Magnesium | £ -10,504,907 | |
| 12951 | Magneto | £ 45,020,225 | |
| 12952 | Magneto. | £ 91,525,507 | |
| 12953 | Magnets | £ 42,771,266 | |
| 12954 | Magnolia Properties | £ 5,505,968 | |
| 12955 | Magnum P.I. | £ 4,478,573,315 | |
| 12956 | Magnus Global | £ 79,802,258 | |
| 12957 | MagnusCorp | £ 56,468,260 | |
| 12958 | Magoo | £ 17,276,464 | |
| 12959 | Magoos | £ 35,729,833 | |
| 12960 | Magpie | £ 18,091,022 | |
| 12961 | Magrathea | £ 54,106,264 | |
| 12962 | Mags Estate | £ 5,508,790 | |
| 12963 | Mags Ltd | £ 4,552,528 | |
| 12964 | Mags Summer | £ 5,708,628 | |
| 12965 | Mai Kao Jai | £ 38,479,227 | |
| 12966 | Maicibai | £ 47,404,486 | |
| 12967 | Maid | £ 25,627,043 | |
| 12968 | £ 457,852,082 | ||
| 12969 | Main Force Patrol | £ 32,257,237 | |
| 12970 | Maintenance | £ 306,851,422 | |
| 12971 | major proportions | £ 330,952,609 | |
| 12972 | Major Space Crossroutes | £ 167,618,040 | |
| 12973 | Major Suite | £ 17,697 | |
| 12974 | Makaveli | £ 59,162,119 | |
| 12975 | Makaveli II | £ 44,201,619 | |
| 12976 | Make America Great Again | £ 5,508,261 | |
| 12977 | Make Gotham Great | £ 134,979,354 | |
| 12978 | make money | £ 4,810,592 | |
| 12979 | Make Netro Great | £ 3,983,342 | |
| 12980 | make this yet | £ 90,110,795 | |
| 12981 | makeofthis | £ 134,245,142 | |
| 12982 | Maker Inc. | £ 2,239,625 | |
| 12983 | Makes Me Feel Fine | £ 64,773,514 | |
| 12984 | Making America Great | £ 164,451,564 | |
| 12985 | Making Pennies | £ 92,844,685 | |
| 12986 | making so many | £ 85,241,085 | |
| 12987 | Mako | £ 10,829,833 | |
| 12988 | Maks a Muckle | £ 938,220,068 | |
| 12989 | Malak.Co | £ -47,512 | |
| 12990 | Malanka | £ 3,177,987 | |
| 12991 | Malaria | £ 1,959,297 | |
| 12992 | Malawi | £ 178,768,230 | |
| 12993 | Malaysia | £ 59,026,830 | |
| 12994 | MalCo | £ 16,148,870 | |
| 12995 | Malcontent | £ 110,148,082 | |
| 12996 | Malevolence | £ 1,704,444,541 | |
| 12997 | malformed creature | £ 267,031,614 | |
| 12998 | Malice | £ 1,492,782,223 | |
| 12999 | Malicious Intent | £ 55,421,858 | |
| 13000 | Malignant Mutt | £ 55,594,011 | |
