| MOUNTAIN STATES PRESSURE SERVICE INC | 789766 | ROCK SPRINGS | 24 |
| MOUNTAIN STATES PUMPING SERVICE LLC | 1488549 | ROCK SPRINGS | 23 |
| MOUNTAIN STATES SHUTTLE INC | 2277790 | PINEDALE | 2 |
| MOUNTAIN STATES SIGNS | 1797761 | CHEYENNE | 1 |
| MOUNTAIN STATES SNOWCATS | 2597893 | TORRINGTON | 1 |
| MOUNTAIN STATES WATER SERVICE INC | 281303 | BIG PINEY | 17 |
| MOUNTAIN STATES WATER SERVICE, INC. | 9530355 | BIG PINEY | 17 |
| MOUNTAIN VIEW BUILDERS INC | 3824203 | CASPER | 0 |
| MOUNTAIN VIEW BUILDING INC | 2003139 | SHERIDAN | 12 |
| MOUNTAIN WEST COMMERCIAL DRIVING SCHOOLS OF WYOMING LLC | 1370872 | GILLETTE | 8 |
| MOUNTAIN WEST ELECTRIC LLC | 1427012 | SHERIDAN | 2 |
| MOUNTAIN WEST ELECTRICAL SERVICES LLC | 1983221 | PINEDALE | 8 |
| MOUNTAIN WEST ENERGY SERVICES LLC | 3840431 | ROCK SPRINGS | 9 |
| MOUNTAIN WEST FILTER PROS LLC | 4290375 | GILLETTE | 1 |
| MOUNTAIN WEST TECHNOLOGIES CORPORATION | 3950652 | CASPER | 4 |
| MOUNTAIN WEST TOWING LLC | 2445355 | LANDER | 3 |
| MOUNTAIN WORKS | 3877154 | ROCK SPRINGS | 5 |
| MOUNTAIN WORKS SERVICES | 4298776 | ROCK SPRINGS | 1 |
| MOUNTAINSCAPES INC | 1511935 | JACKSON | 3 |
| MOUNTAINSIDE POWER LLC | 3999093 | AFTON | 22 |
| MOVIE NATION LLC | 4565790 | CHEYENNE | 0 |
| MOVING BOXES GOTTA GO LLC | 4541925 | SHERIDAN | 1 |
| MOVING FORWARD TRUCKING LLC | 4333478 | SUNDANCE | 2 |
| MOVING RESERVATIONS CORP | 3524456 | SHERIDAN | 0 |
| MOWRY RANCH INC | 659245 | SARATOGA | 2 |
| MPM CORP | 970142 | ENCAMPMENT | 1 |
| MQ ENTERPRISES | 1887441 | MILLS | 1 |
| MR FIDO TRUCKING LLC | 3091957 | ROCK SPRINGS | 1 |
| MRG TRUCKING LLC | 3251648 | UPTON | 17 |
| MRK CONSTRUCTION INC | 2493734 | CODY | 2 |
| MRW EARTHWORKS LLC | 4357496 | SUNDANCE | 1 |
| MSDS LOGISTICS LLC | 3991876 | CHEYENNE | 0 |
| MT STATES WELL LOGGING CO INC | 749430 | CASPER | 1 |
| MT TRANSPORT LLC | 3816677 | HULETT | 2 |
| MTC ENTERPRISES INC | 2233732 | CODY | 0 |
| MTCO FREIGHT LLC | 4034737 | SHERIDAN | 0 |
| MTFS LOGISTICS LLC | 3475662 | SHERIDAN | 1 |
| MTM TRUCKING LLC | 2979172 | CHEYENNE | 1 |
| MTR RANCH SUPPLY | 1858133 | BUFFALO | 1 |
| MUD-LUTUS LOGISITCS LLC | 4554679 | RIVERTON | 1 |
| MULE TEAM TRANSPORT LLC | 1578178 | CASPER | 1 |
| MULESHOE RANCH INC | 4322185 | HAVENS TOWNSHIP | 1 |
| MULLINAX INC | 101135 | SHERIDAN | 7 |
| MULLINAX IRRIGATION LLC | 4543665 | SHERIDAN | 2 |
| MULLOCK FARMS INC | 3067176 | YODER | 2 |
| MULTIPLE STATES TRANSPORT LLC | 6321531 | SHERIDAN | 1 |
| MURDOCH OIL INC | 251039 | GREYBULL | 6 |
| MURPH'S DRILLING CO INC | 732589 | MOORCROFT | 2 |
| MURRAY DRILLING SERVICE INC | 307548 | CASPER | 5 |
| MURRAY J PALMER | 722860 | KINNEAR | 2 |
| MURRAYMERE FARMS | 273674 | POWELL | 2 |
| MUSTANG TIRE SERVICE INC | 2120759 | UPTON | 3 |
| MUSTANG TRANSPORT LLC | 1338053 | ROCK SPRINGS | 2 |
| MUSTANG TRUCKING INC | 3019347 | ROCK SPRINGS | 1 |
| MW TRUCKING LLC | 4201360 | GRANITE CANON | 2 |
| MZ EXPRESS & TRANSPORT LLC | 4251525 | DOUGLAS | 1 |
| N A NELSON CONSTRUCTION CO | 512696 | SHERIDAN | 4 |
| N D ENTERPRISES | 757067 | CODY | 1 |
| N R BIDEAU | 706606 | CASPER | 6 |
| N.L.H TRUCKING LLC | 8856586 | GILLETTE | 1 |
| N&B BOXWELL INC | 4228471 | SHERIDAN | 8 |
| N8 TRUCKING LLC | 4161417 | BUFFALO | 3 |
| NACK TRUCKING LLC | 1067275 | TEN SLEEP | 4 |
| NANCY ELM | 1015243 | KAYCEE | 3 |
| NANCY PALMER | 2578145 | HULETT | 1 |
| NARROW PATH TRUCKING LLC | 4032281 | PINE BLUFFS | 1 |
| NASHVILLE TRANSPORT & TOWING LLC | 4479983 | SHERIDAN | 1 |
| NAT GROUP LLC | 3957046 | CHEYENNE | 1 |
| NATCO INC | 704428 | RIVERTON | 4 |
| NATE LEWIS | 1384836 | BURNS | 1 |
| NATE LIVESTOCK TRUCKING LLC | 1306591 | COKEVILLE | 1 |
| NATE TRANSPORT LLC | 3412123 | COKEVILLE | 2 |
| NATHAN MATTHEWS TRUCKING L L C | 3567977 | GILLETTE | 1 |
| NATHANIEL MELGOSA OR LORRAINE MELGOSA | 838144 | GILLETTE | 3 |
| NATHANIEL SCHULTZ | 4224705 | CASPER | 1 |
| NATIHO LLC | 3647549 | CASPER | 1 |
| NATIONAL CRANE LLC | 2970278 | SUNDANCE | 1 |
| NATIONAL FREIGHT FORWARD AGENCY | 3938699 | SHERIDAN | 0 |
| NATIONAL OUTDOOR LEADERSHIP SCHOOL | 598677 | LANDER | 67 |
| NATRONA COUNTY SCHOOL DISTRICT | 3408454 | CASPER | 119 |
| NATRONA TRANSFER & STORAGE CO INC | 507380 | CASPER | 1 |
| NATURAL BRIDGE ANGUS LLC | 4194973 | DOUGLAS | 1 |
| NATURAL GAS PROCESSING CO | 378808 | WORLAND | 7 |
| NAVA'S TRUCKING LLC | 1587850 | GILLETTE | 1 |
| NAVAJO TRANSITIONAL ENERGY COMPANY | 3524283 | GILLETTE | 6 |
| NAVETRA LLC | 4327607 | CHEYENNE | 0 |
| NAYLOR TRUCKING AND LOGISTICS | 4271155 | CASPER | 0 |
| NBS CONSULTING LLC | 2446967 | GILLETTE | 1 |
| NBS ENERGY SERVICES LLC | 3979475 | GLENROCK | 6 |
| NC MACHINE LLC | 2129288 | CASPER | 2 |
| NE WYOMING SOIL TREATMENT LLC | 375849 | OSAGE | 2 |
| NEC ELECTRIC INC | 101132 | FT BRIDGER | 3 |
| NEED -A-RIDE-TAXI CAB LLC | 2927276 | GILLETTE | 1 |
| NEFTALI KIKE SOLIS | 4333636 | RIVERTON | 1 |
| NEIL ZIMMERMAN | 947428 | GILLETTE | 1 |
| NEIMAN SAWMILL INC | 101128 | HULETT | 7 |
| NELSON EXCAVATING LLC | 609940 | SHERIDAN | 3 |
| NELSON WATER WELL DRILLING LLC | 644015 | FREEDOM | 1 |
| NEPECO CO | 101127 | BYRON | 2 |
| NERO FREIGHT | 3839193 | CHEYENNE | 0 |