| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Waco | city | Montana | United States | 46.07 | -107.71 | 2847 | |
| Wade | city | Montana | United States | 45.16 | -108.82 | 4199 | |
| Wagner | city | Montana | United States | 48.37 | -108.08 | 2509 | |
| Wagon Wheel Trailer Court | city | Montana | United States | 47.71 | -104.16 | 1955 | |
| Wagon Wheel Trailer Court | city | Montana | United States | 46.90 | -114.18 | 3349 | |
| Wagon Wheel Trailer Court | city | Montana | United States | 45.68 | -111.06 | 5029 | |
| Wagsmith Villa (historical) | city | Montana | United States | 48.35 | -114.01 | 4189 | |
| Walker (historical) | city | Montana | United States | 45.77 | -111.03 | 5029 | |
| Walker Mobile Home Park | city | Montana | United States | 48.15 | -104.52 | 1919 | |
| Walkerville | city | Montana | United States | 46.03 | -112.54 | 6709 | |
| Wall City | city | Montana | United States | 46.54 | -112.94 | 4455 | |
| Wallview (historical) | city | Montana | United States | 46.76 | -108.47 | 3599 | |
| Waltham | city | Montana | United States | 47.57 | -110.89 | 3395 | |
| Wanso (historical) | city | Montana | United States | 48.64 | -104.88 | 2509 | |
| Ward | city | Montana | United States | 46.15 | -114.18 | 4189 | |
| Ware | city | Montana | United States | 47.18 | -109.67 | 3602 | |
| Warland (historical) | city | Montana | United States | 48.50 | -115.29 | 2509 | |
| Warm Springs | city | Montana | United States | 46.18 | -112.78 | 5029 | |
| Warr (historical) | city | Montana | United States | 46.83 | -108.82 | 4199 | |
| Warren | city | Montana | United States | 45.06 | -108.66 | 4409 | |
| Warrick | city | Montana | United States | 48.07 | -109.61 | 4189 | |
| Washoe | city | Montana | United States | 45.16 | -109.21 | 5029 | |
| Waterloo | city | Montana | United States | 45.72 | -112.19 | 4514 | |
| Watkins | city | Montana | United States | 47.24 | -105.87 | 2696 | |
| Watkins | city | Montana | United States | 45.42 | -111.66 | 5029 | |
| Watson | city | Montana | United States | 46.67 | -111.37 | 5400 | |
| Watson (historical) | city | Montana | United States | 47.57 | -111.27 | 3549 | |
| Watson Flats (historical) | city | Montana | United States | 47.09 | -106.28 | 2598 | |
| Wayne | city | Montana | United States | 47.44 | -110.96 | 3697 | |
| Webster | city | Montana | United States | 46.06 | -104.25 | 3349 | |
| Weed | city | Montana | United States | 46.65 | -112.26 | 5029 | |
| Weede (historical) | city | Montana | United States | 46.92 | -107.92 | 2700 | |
| Weeksville | city | Montana | United States | 47.52 | -114.99 | 2598 | |
| Welch | city | Montana | United States | 45.93 | -112.32 | 5869 | |
| Weldon | city | Montana | United States | 47.61 | -105.89 | 2598 | |
| West Acres Trailer Park | city | Montana | United States | 46.76 | -114.11 | 3349 | |
| West College Park | city | Montana | United States | 45.67 | -111.07 | 5029 | |
| West End | city | Montana | United States | 45.67 | -110.83 | 5869 | |
| West Fork | city | Montana | United States | 48.69 | -105.91 | 2821 | |
| West Gallatin | city | Montana | United States | 45.70 | -111.22 | 5029 | |
| West Glacier | city | Montana | United States | 48.50 | -113.98 | 3372 | |
| West Glendive | city | Montana | United States | 47.11 | -104.75 | 2093 | |
| West Havre | city | Montana | United States | 48.54 | -109.73 | 2627 | |
| West Lewistown | city | Montana | United States | 47.10 | -109.46 | 4189 | |
| West Riverside | city | Montana | United States | 46.88 | -113.89 | 3349 | |
| West Valley | city | Montana | United States | 46.15 | -113.02 | 5869 | |
| West Yellowstone | city | Montana | United States | 44.66 | -111.10 | 6735 | |
| Westana Mobile Home Park | city | Montana | United States | 46.22 | -114.15 | 3733 | |
| Westby | city | Montana | United States | 48.87 | -104.05 | 2017 | |
| Westfall | city | Montana | United States | 47.12 | -114.79 | 2818 | |
| Westlake | city | Montana | United States | 45.73 | -111.34 | 4596 | |
| Westmore | city | Montana | United States | 46.47 | -104.64 | 2644 | |
| Westview Park | city | Montana | United States | 46.91 | -114.04 | 3349 | |
| Westwood Estates | city | Montana | United States | 46.41 | -105.84 | 2509 | |
| Wetzel | city | Montana | United States | 48.75 | -113.16 | 5029 | |
| Whately | city | Montana | United States | 48.16 | -106.51 | 2083 | |
| Wheaton (historical) | city | Montana | United States | 46.58 | -108.85 | 3749 | |
| Wheeler | city | Montana | United States | 48.01 | -106.51 | 2509 | |
| Wheelers Trailer Court | city | Montana | United States | 45.68 | -111.07 | 5029 | |
| Whitcomb (historical) | city | Montana | United States | 47.93 | -108.56 | 5029 | |
| White | city | Montana | United States | 45.81 | -111.32 | 4340 | |
| White (historical) | city | Montana | United States | 47.29 | -106.03 | 2700 | |
| White City | city | Montana | United States | 45.30 | -110.69 | 6709 | |
| White Haven | city | Montana | United States | 48.34 | -115.52 | 2509 | |
| White Pine | city | Montana | United States | 47.74 | -115.48 | 2591 | |
| White Sulphur Springs | city | Montana | United States | 46.55 | -110.90 | 5098 | |
| Whitefish | city | Montana | United States | 48.41 | -114.34 | 3349 | |
| Whitehall | city | Montana | United States | 45.87 | -112.10 | 4376 | |
| Whites City | city | Montana | United States | 46.63 | -111.44 | 5869 | |
| Whitetail | city | Montana | United States | 48.90 | -105.16 | 2509 | |
| Whitewater | city | Montana | United States | 48.76 | -107.63 | 2509 | |
| Whitlash | city | Montana | United States | 48.91 | -111.25 | 4189 | |
| Wibaux | city | Montana | United States | 46.99 | -104.19 | 2670 | |
| Wickes | city | Montana | United States | 46.35 | -112.10 | 5383 | |
| Wilborn | city | Montana | United States | 46.88 | -112.34 | 5029 | |
| Wild Rose (historical) | city | Montana | United States | 48.64 | -106.35 | 2896 | |
| Willard | city | Montana | United States | 46.19 | -104.37 | 3385 | |
| Williams | city | Montana | United States | 48.28 | -112.13 | 3763 | |
| Williamsburg | city | Montana | United States | 45.99 | -112.56 | 5869 | |
| Willow Creek | city | Montana | United States | 45.83 | -111.64 | 4206 | |
| Willow Creek Mobile Home Park | city | Montana | United States | 48.17 | -114.29 | 2926 | |
| Willow Crossing | city | Montana | United States | 45.53 | -106.19 | 3349 | |
| Willow Wynn Trailer Park | city | Montana | United States | 47.60 | -114.12 | 3349 | |
| Wilsall | city | Montana | United States | 45.99 | -110.66 | 5029 | |
| Windham | city | Montana | United States | 47.08 | -110.14 | 4301 | |
| Wing (historical) | city | Montana | United States | 48.79 | -108.59 | 3349 | |
| Wingina (historical) | city | Montana | United States | 48.32 | -112.12 | 3756 | |
| Winifred | city | Montana | United States | 47.56 | -109.37 | 3349 | |
| Winnecook | city | Montana | United States | 46.40 | -109.66 | 4189 | |
| Winnett | city | Montana | United States | 47.00 | -108.35 | 3349 | |
| Winston | city | Montana | United States | 46.48 | -111.66 | 4333 | |
| Wiota (historical) | city | Montana | United States | 48.10 | -106.26 | 2096 | |
| Wisdom | city | Montana | United States | 45.62 | -113.45 | 6066 | |
| Wise River | city | Montana | United States | 45.79 | -112.95 | 5869 | |
| Wisner Crossing | city | Montana | United States | 45.78 | -111.08 | 4560 | |
| Wolf Creek | city | Montana | United States | 47.01 | -112.07 | 3700 | |
| Wolf Point | city | Montana | United States | 48.09 | -105.64 | 2030 | |
| Wolsey | city | Montana | United States | 46.78 | -110.82 | 6000 | |
| Wood Place | city | Montana | United States | 45.72 | -106.42 | 3349 | |
| Woodhawk (historical) | city | Montana | United States | 47.71 | -109.20 | 3359 | |
| Woodin | city | Montana | United States | 45.81 | -112.71 | 5869 | |
| Woods Bay | city | Montana | United States | 48.00 | -114.05 | 2887 | |
| Woods Crossing | city | Montana | United States | 47.88 | -111.27 | 3349 | |
| Woods Place | city | Montana | United States | 45.69 | -110.26 | 5029 | |
| Woods Place | city | Montana | United States | 47.50 | -108.15 | 2673 | |
| Woodside | city | Montana | United States | 46.31 | -114.16 | 3526 | |
| Woodside Crossing | city | Montana | United States | 46.31 | -114.15 | 3484 | |
| Woodville | city | Montana | United States | 46.05 | -112.45 | 6709 | |
| Woodward Place | city | Montana | United States | 45.13 | -111.76 | 6089 | |
| Woodworth | city | Montana | United States | 47.11 | -113.30 | 4202 | |
| Wooley | city | Montana | United States | 47.77 | -104.11 | 1942 | |
| Worden | city | Montana | United States | 45.96 | -108.16 | 3349 | |
| Wormser (historical) | city | Montana | United States | 45.98 | -110.00 | 5029 | |
| Wurtz Hill | city | Montana | United States | 48.90 | -114.39 | 4189 | |
| Wye | city | Montana | United States | 46.95 | -114.12 | 3349 | |
| Wyola | city | Montana | United States | 45.13 | -107.39 | 4189 | |
| Wá ską́šį diʾóda | city | Montana | United States | 47.06 | -109.43 | 4189 |