| MISSOULA BOTTLING COMPANY INC | 32404 | MISSOULA | 8 |
| MISSOULA COMPOST COLLECTION LLC | 3598134 | MISSOULA | 2 |
| MISSOULA CONCRETE LLC | 4241024 | BONNER | 1 |
| MISSOULA COUNTY TOWING & RECOVERY LLC | 2867297 | MISSOULA | 1 |
| MISSOULA ELECTRIC COOPERATIVE INC | 422499 | MISSOULA | 44 |
| MISSOULA JUNK REMOVAL LLC | 3911146 | MISSOULA | 1 |
| MISSOULA MOTOR COMPANY LLC | 4013682 | MISSOULA | 3 |
| MISSOULA RECOVERY AND TOWING LLC | 4467100 | MISSOULA | 0 |
| MISSOULA TOWING LLC | 7620409 | MISSOULA | 4 |
| MISSOULA VALLEY CONCRETE PUMPING INC | 1786656 | MISSOULA | 4 |
| MISSOULA VALLEY TREE SERVICE | 2559440 | CLINTON | 1 |
| MISSOURI BREAKS EXPRESS, INC | 6984251 | ROUNDUP | 4 |
| MISSOURI RIVER CONTRACTORS LLC | 2899464 | EAST HELENA | 31 |
| MISSOURI RIVER LOGISTICS LLC | 3579390 | WINSTON | 3 |
| MISSOURI RIVER TRANSPORTATION LLC | 3088724 | HUNTLEY | 1 |
| MISSOURI RIVER TRUCKING & EXCAVATING INC | 988458 | BLACK EAGLE | 45 |
| MISTY THOMPSON | 2517548 | MISSOULA | 2 |
| MITCH ROEN | 3974868 | MUSSELSHELL | 1 |
| MITCH SCIDMORE CONSTRUCTION INC | 2532148 | WHITE SULPHUR SPRINGS | 1 |
| MITCHELL NELSON | 1354502 | GALLATIN GATEWAY | 1 |
| MITCHELL NORMAN | 2994471 | NASHUA | 1 |
| MITCHELL SENNER | 794326 | BLOOMFIELD | 2 |
| MITCHELL TED CHURCHILL | 3287395 | COLUMBIA FLS | 1 |
| MITCHELL'S CRANE AND TRUCKING LLC | 2955379 | BAKER | 20 |
| MITI LOGISTICS INC | 4508525 | BILLINGS | 1 |
| MJ DEWITT FARMS LLC | 1246399 | WOLF POINT | 2 |
| MJPEET SEPTIC TANK CLEANING | 2056672 | GREAT FALLS | 1 |
| MK & SON TRUCKING LLC | 4230776 | KALISPELL | 1 |
| MK LEASING LLC | 4287805 | WHITEFISH | 1 |
| MKM CONSTRUCTION INC | 1633605 | LAUREL | 6 |
| ML RANCH LLC | 3428686 | RED LODGE | 1 |
| MLB69 | 4250133 | BOZEMAN | 1 |
| MLB69 LLC | 4253452 | BOZEMAN | 0 |
| MM EXCAVATION LLC | 7795391 | CUT BANK | 2 |
| MM TRANSPORT LLC | 4237478 | HARLEM | 1 |
| MMAM INC | 3310041 | ALBERTON | 1 |
| MMT CONTRACTING LLC | 3416634 | HELENA | 2 |
| MMT SEPTIC LLC | 4023484 | HOT SPRINGS | 1 |
| MNT HELENA TRUCK LINE, LLC | 8948196 | HELENA | 1 |
| MOBILE AG SEED CLEANING LLC | 2925973 | WHITETAIL | 1 |
| MOBILE CITY INC | 1575483 | HELENA | 1 |
| MOBILE STOR | 2846483 | BILLINGS | 3 |
| MOCKEL PRECAST AND EXCAVATING CO INC | 1251865 | MONTANA CITY | 4 |
| MODERN FORESTRY LLC | 2086915 | POLSON | 1 |
| MODERN MACHINERY CO INC | 633615 | MISSOULA | 127 |
| MODERN RECYCLING LLC | 4551731 | VICTOR | 1 |
| MODERN WAGON TRANSPORT LLC | 4521011 | BILLINGS | 1 |
| MOEN EXCAVATION LLC | 878519 | VIRGINIA CITY | 2 |
| MOEN LOGISTICS LLC | 3801751 | FLORENCE | 0 |
| MOGO REAGAN LLC | 3436002 | CUT BANK | 2 |
| MOHLER HARDWOODS & WOOD WORKS INC | 675111 | ST IGNATIUS | 1 |
| MOIESE FERTILIZER CO | 777831 | MOIESE | 3 |
| MOLITOR LOGISTICS LLC | 2231078 | BOULDER | 0 |
| MOLOT TRANSPORTATION LLC | 3921636 | BOZEMAN | 1 |
| MOLTZANS AUTO INC | 1620708 | GREAT FALLS | 1 |
| MON-DAK OILFIELD SERVICES LLC | 2289672 | PHILIPSBURG | 2 |
| MON-DAK TRUCK BROKERS LLC | 3007286 | WESTBY | 0 |
| MON-KOTA INC | 366815 | FAIRVIEW | 9 |
| MONARCH APIAIRES LLC | 4181915 | VALIER | 11 |
| MONARCH DEVELOPMENT INC | 1927965 | BOZEMAN | 2 |
| MONARCH ELK ENTERPRISES INC | 3087849 | EAST HELENA | 1 |
| MONARCH LOGISTICS, INC. | 8098705 | BIGFORK | 10 |
| MONDAK GROUNDSKEEPERS LLC | 4197418 | SIDNEY | 1 |
| MONETTE FARMS USA INC | 3539859 | HARDIN | 15 |
| MONNETT EXCAVATION INC | 2627103 | BELGRADE | 5 |
| MONNETT SAND AND GRAVEL | 3091102 | BELGRADE | 4 |
| MONROE ANDERSON | 2004819 | MALTA | 1 |
| MONROE PROPERTY CO LLC | 1113769 | GREENOUGH | 4 |
| MONROE'S HIGH COUNTRY TRAVEL PLAZA | 2321448 | HELENA | 1 |
| MONT-WYO WEST FARM LLC | 3514608 | BILLINGS | 1 |
| MONTALBAN OIL AND GAS OPERATIONS INC | 3419637 | CUT BANK | 2 |
| MONTANA ADVENTURE TOURS LLC | 4349868 | WEST YELLOWSTONE | 1 |
| MONTANA AERO INC | 1390888 | MISSOULA | 1 |
| MONTANA ASPHALT PAVING LLC | 4429515 | ANACONDA | 1 |
| MONTANA AUTO RECYCLERS | 825743 | KALISPELL | 1 |
| MONTANA AUTO TRANSPORT | 2847703 | FAIRFIELD | 2 |
| MONTANA AUTO TRANSPORTER | 4302592 | BILLINGS | 1 |
| MONTANA AUTOMOTIVE SOLUTIONS LLC | 3214130 | GALLATIN GATEWAY | 1 |
| MONTANA BLACK ANGUS BEEF LLC | 2261260 | SAINT IGNATIUS | 7 |
| MONTANA BOILER SERVICE INC | 1202399 | BILLINGS | 4 |
| MONTANA BROOM AND BRUSH | 1951824 | BUTTE | 1 |
| MONTANA BROOM AND BRUSH SUPPLY | 1023952 | HELENA | 0 |
| MONTANA BRUSH AND TREE CONTROL LLC | 4186723 | STEVENSVILLE | 1 |
| MONTANA CATTLE COMPANY | 1232625 | FLORENCE | 1 |
| MONTANA CHARTER FLIGHTS & TRAVEL SERVICE | 2218358 | HELENA | 0 |
| MONTANA CITY EXCAVATING LLC | 2283923 | EAST HELENA | 1 |
| MONTANA CITY LANDSCAPING AND IRRIGATION INC | 3769704 | HELENA | 2 |
| MONTANA CITY TOWING LLC | 3284844 | MONTANA CITY | 5 |
| MONTANA CIVIL CONTRACTORS INC | 1710429 | BELGRADE | 7 |
| MONTANA CONTAINER CONNECTION INC | 4035773 | BUTTE | 2 |
| MONTANA CONTAINERS SALES AND RENTALS LLC | 3998836 | BILLINGS | 8 |
| MONTANA CONTRACTING LLC | 1620228 | WHITEHALL | 1 |
| MONTANA CRANE SERVICE LTD | 1247647 | BOZEMAN | 27 |
| MONTANA CUSTOM CARRIERS LLC | 2236425 | HILGER | 0 |
| MONTANA DAKOTA SCALE SERVICE INC | 400811 | FAIRVIEW | 1 |
| MONTANA DAKOTA TOWING INC | 2263922 | GLENDIVE | 3 |
| MONTANA DIGITAL LLC | 2876502 | KALISPELL | 1 |
| MONTANA DIRT WORKS LLC | 1231933 | MARION | 5 |
| MONTANA DISPLAY FIREWORKS INC | 1030231 | MISSOULA | 1 |
| MONTANA DOCKS AND LIFTS LLC | 2582848 | BUTTE | 9 |