| BILLINGS COLLISION REPAIR INC | 2210657 | BILLINGS | 6 |
| BILLINGS FAMILY YMCA | 2394747 | BILLINGS | 17 |
| BILLINGS FARMHAND INC | 1041075 | BILLINGS | 3 |
| BILLINGS FLYING SERVICE LLC | 1127403 | BILLINGS | 52 |
| BILLINGS FOURSQUARE CHURCH | 4389446 | BILLINGS | 5 |
| BILLINGS OVERHEAD DOOR COMPANY INC | 597052 | BILLINGS | 9 |
| BILLINGS PAVEMENT SERVICES LLC | 3688443 | BILLINGS | 2 |
| BILLINGS SIGN SERVICE INC | 1487200 | BILLINGS | 11 |
| BILLMAYER WATER SUPPLY LLC | 4422909 | HAVRE | 3 |
| BILLMAYER'S DRILLING INC | 1263156 | KALISPELL | 2 |
| BILLS TRUCK SERVICE | 3895547 | MILES CITY | 1 |
| BILLY HENDRICKSON | 3228610 | CORVALLIS | 1 |
| BILLY JOE DAVIS | 1273317 | TROY | 1 |
| BILLY WASHBURN | 1227620 | SAINT IGNATIUS | 1 |
| BINDER BUILT LLC | 3889554 | BELGRADE | 6 |
| BING MOUNTAIN LLC | 4103072 | BOZEMAN | 1 |
| BIOSAFE SOLUTIONS INC | 1865380 | MISSOULA | 2 |
| BIOSQUEEZE INC | 3210282 | BUTTE | 17 |
| BIRCH CREEK COLONY INC | 1423092 | VALIER | 2 |
| BIRKELAND FARMS TRUCKING LLC | 1609460 | FORT BENTON | 3 |
| BIRKY CONTRACTORS LLC | 1380556 | VAUGHN | 9 |
| BIRKY TRUCKING | 799756 | CHINOOK | 1 |
| BIRLUT CONSTRUCTION LLC | 4218758 | HELENA | 1 |
| BISHOP CONSTRUCTION LLC | 1536524 | BILLINGS | 1 |
| BISHOP INC | 1978716 | MALTA | 9 |
| BISHOP TRANSPORTATION | 4313315 | ROUNDUP | 1 |
| BISON BUILDING SYSTEMS INC | 1019248 | KALISPELL | 3 |
| BISON ENGINEERING INC | 2642389 | HELENA | 7 |
| BITT-PHIRE INC | 2223453 | CORVALLIS | 0 |
| BITTERROOT BACKHOE | 2813448 | CORVALLIS | 1 |
| BITTERROOT CONSTRUCTION CLEAN-UP & HAULING LLC | 3293545 | HAMILTON | 1 |
| BITTERROOT CONTRACTING LLC | 3998547 | KALISPELL | 2 |
| BITTERROOT EQUIPTMENT & SUPPLY LLC | 2774882 | HELENA | 4 |
| BITTERROOT LOGISTICS LIMITED LIABILITY COMPANY | 2429556 | CORVALLIS | 0 |
| BITTERROOT SHEDZ LLC | 3529713 | STEVENSVILLE | 2 |
| BITTERROOT TOWING LLC | 3931746 | VICTOR | 1 |
| BITTERROOT TURF FARM | 1274970 | CORVALLIS | 2 |
| BITTERROOT VALLEY SEPTIC LLC | 3718321 | VICTOR | 2 |
| BITTERROOT WELDING AND HYDRAULICS INC | 1775266 | MISSOULA | 2 |
| BITTERROOT WORKS LLC | 3598781 | DARBY | 1 |
| BJ ENTERPRISES LLC | 2522316 | BILLINGS | 1 |
| BJORN JOHNSON CONSTRUCTION LLC | 1475592 | MISSOULA | 7 |
| BLACK BEAR EXPRESS LLC | 2043118 | BOZEMAN | 1 |
| BLACK CANYON LLC | 2296203 | CROW AGENCY | 1 |
| BLACK CAT LINE LLC | 4361164 | FORSYTH | 1 |
| BLACK DIAMOND INSTALLATIONS LLC | 8811771 | BOZEMAN | 3 |
| BLACK DIAMOND LANDWORKS LLC | 4551908 | KALISPELL | 5 |
| BLACK DIAMOND TRANSPORT LLC | 2833604 | CORVALLIS | 1 |
| BLACK DIAMOND TRUCKING LLC | 1602216 | BELGRADE | 1 |
| BLACK FLAG LIVESTOCK LLC | 4454346 | FROMBERG | 1 |
| BLACK FOX FIRE LLC | 4336808 | HAMILTON | 1 |
| BLACK GOLD TOPSOIL AND FARMS | 1570392 | KALISPELL | 1 |
| BLACK HAT MOBILE WASH LLC | 3907406 | BILLINGS | 2 |
| BLACK HILLS CONSTRUCTION LLC | 4341346 | GLENDIVE | 1 |
| BLACK INC | 1263202 | KALISPELL | 1 |
| BLACK RAPTOR LLC | 3298178 | CUT BANK | 2 |
| BLACK ROCK RESOURCES | 4214661 | LEWISTOWN | 3 |
| BLACK STACK OF MT LLC | 2097207 | BOZEMAN | 5 |
| BLACK STALLION TRUCKING LLC | 3218890 | BELGRADE | 3 |
| BLACKED OUT MOTORSPORTS LLC | 4575172 | BOZEMAN | 1 |
| BLACKFOOT ASPHALT MAINTENANCE LLP | 4500864 | MISSOULA | 1 |
| BLACKFOOT LOGGING LLC | 1264728 | LINCOLN | 1 |
| BLACKFOOT SLATE & STONE INC | 1219069 | MISSOULA | 2 |
| BLACKFOOT TELEPHONE COOPERATIVE INC | 377689 | MISSOULA | 15 |
| BLACKHEARTS LODGE RENTALS LLC | 4348942 | ROSEBUD | 1 |
| BLACKLINE TRANSPORT LLC | 1680459 | POMPEYS PILLAR | 13 |
| BLACKOUT 406 LLC | 3644600 | MILES CITY | 2 |
| BLACKSMITH OIL TOOLS USA INC | 3705950 | HAVRE | 7 |
| BLACKTAIL FIRE SERVICE INC | 1604061 | DILLON | 4 |
| BLACKWATER SPECIALIZED | 5688668 | KALISPELL | 1 |
| BLACKWELL ENTERPRISES INC | 2380948 | WHITEFISH | 1 |
| BLADE TRUCKING LLC | 3574966 | WHITEHALL | 1 |
| BLAINS TREE SERVICE | 3054412 | BILLINGS | 1 |
| BLAKE BOSCHEE | 2850355 | MALTA | 1 |
| BLAKE RINGER | 3365482 | WHITE SULPHUR SPRINGS | 2 |
| BLANTON CONTRACTING LLC | 3237211 | BELGRADE | 2 |
| BLASE CONTRACTING & RENTAL LLC | 1310600 | BOZEMAN | 1 |
| BLAZE MOUNTAIN TRANSPORT LLC | 2940644 | MANHATTAN | 5 |
| BLEVINS EXCAVATION & CONSTRUCTION INC | 1250300 | BOZEMAN | 2 |
| BLEVINS TRANSPORT LLC | 3421645 | KALISPELL | 1 |
| BLEW BY YOU CARTAGE LLC | 3450044 | PLAINS | 1 |
| BLINK TRUCKING LLC | 4552648 | CUT BANK | 1 |
| BLISS LIVESTOCK CO | 1160873 | SAND SPRINGS | 2 |
| BLIZZARD TRUCK AND TRANSPORT | 4182610 | BUTTE | 1 |
| BLN TRUCKING LLC | 3127329 | WHITEHALL | 1 |
| BLOCK MOUNTAIN SLATE & STONE INC | 1314390 | PLAINS | 2 |
| BLOEDORN LUMBER BILLINGS | 1233537 | BILLINGS | 8 |
| BLOEDORN LUMBER LEWISTOWN | 2593564 | LEWISTOWN | 5 |
| BLOEDORN LUMBER MILES CITY | 669806 | MILES CITY | 5 |
| BLOMBERG TRUCKING LLC | 2893974 | SHEPHERD | 1 |
| BLONDE GRAIN FARMS LLC | 4366877 | LEDGER | 1 |
| BLOODLINE EXPRESS LLC | 4528846 | GREAT FALLS | 1 |
| BLOOMING PRAIRIE INC | 2284667 | LORING | 1 |
| BLUE CLOUD EARTHWORKS | 3011165 | HELENA | 1 |
| BLUE CREEK EXCAVATION LLC | 4393368 | BILLINGS | 1 |
| BLUE CREEK HAULING LLC | 3656841 | HERON | 1 |
| BLUE MOUNTAIN DIRECTIONAL DRILLING LLC | 2631033 | MISSOULA | 5 |
| BLUE MOUNTAIN FIRE LLC | 1633023 | MISSOULA | 4 |
| BLUE MOUNTAIN LANDSCAPE & SPRINKLERS INC | 3869976 | MISSOULA | 1 |
| BLUE RANGE ENGINEERING CO INC | 560269 | BUTTE | 2 |