| T6Table 62 LLC | Kalispell | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TLTailing Loop Winery | Kalispell | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TCTanoshii, Craft Winery & Washoku | Bozeman | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TTTash T Diamond Livestock INC. | Dillon | MT | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
| TSTen Spoon a Montana Vineyard and Winery | Missoula | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TDTerminus Distilling Company LLC | Dillon | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TCThatcher Company of Montana, INC. | Missoula | MT | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| TAThe Abundance Project | St Ignatius | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TIThe Innovation Machine, LTD | Helena | MT | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| TOThe Old Hatchery Winery, LLC | Bozeman | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TPThompson Precision INC | Kalispell | MT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| TETimber Edge Machine INC. | Stevensville | MT | Fabricated Metal Product Manufacturing332216 | — | ◐ LIKELY ACTIVE |
| TRTongue River Winery | Miles City | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TCTrail Creek Winery | Seeley Lake | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TSTrailhead Spirits | Billings | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TDTranspak - DIV 134 Kalispell | Kalispell | MT | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| TPTrapper Peak Winery | Darby | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TSTreasure State Orthotic & Prosthetic Clinic, INC. | Bozeman | MT | Miscellaneous Manufacturing339113 | — | ◐ LIKELY ACTIVE |
| TCTreco Constructors, INC. | Billings | MT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| TSTrouts & Sprouts LLC | Dillon | MT | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| TTTruzzolino Tamales | Butte | MT | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| UCUavionix CORP | Bigfork | MT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| USUndammed Spirits | Billings | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| UGU.s. Germanium INC. | Helena | MT | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| UIU.S. Import Meat Inspection | Sweet Grass | MT | — | — | ◐ LIKELY ACTIVE |
| VValhalla | Bozeman | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| VFVassallo Foods/Country Foods | Polson | MT | Food Manufacturing311824 | 1-19 | ◐ LIKELY ACTIVE |
| VSVilya Spirits | Kalispell | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WBWallace Beverage Works | Bozeman | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WFWandler Firearms LLC | Ronan | MT | Fabricated Metal Product Manufacturing332994 | — | ◐ LIKELY ACTIVE |
| WWWatchdog Winery, LLC | Dixon | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WCWaterjet Cutting Technology LLC | Great Falls | MT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| WEWaters Edge Winery & Bistro Kalispell | Kalispell | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WIWatson Irrigation Specialists INC | Townsend | MT | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| WTWatson's Top Shop INC. | Great Falls | MT | Furniture and Related Product Manufacturing337110 | — | ◐ LIKELY ACTIVE |
| WLWesterfield LLC | Missoula | MT | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| WMWestern Montana Orthotics & Prosthetics, P.c | Missoula | MT | Miscellaneous Manufacturing339113 | — | ◐ LIKELY ACTIVE |
| WDWestslope Distillery | Hamilton | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WFWestwind Fabrication L.l.c | Pray | MT | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| WAWhisting Andy, Inc. | Bigfork | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WRWhite Raven Winery | Columbia Falls | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WWWhite's Wholesale Meats | Ronan | MT | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| WWilcoxson's | Livingston | MT | Food Manufacturing311520 | 20-99 | ◐ LIKELY ACTIVE |
| WDWildrye Distilling, LLC | Bozeman | MT | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WMWilliam M. Kronmiller & CO. INC. | Billings | MT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| WMWillow Mountain Winery | Corvallis | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WBWilsons Big Mountain Mead | Plains | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WBWine Bozo's INC. | Belgrade | MT | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| WMWinters, Michael a | Bozeman | MT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| WPWolf Point Sand & Gravel, LLC. | Wolf Point | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |