| Official Name: | Martinsdale Colony, Montana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Montana#USA |
| Pushpin Label: | Martinsdale Colony |
| Coordinates: | 46.4897°N -110.2672°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Wheatland |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 2.22 |
| Area Land Sq Mi: | 2.22 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 5.76 |
| Area Land Km2: | 5.76 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Density Km2: | 16.84 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 4740 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 59053 (Martinsdale) |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-48190 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2804318 |
| Population Total: | 97 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 43.63 |
Martinsdale Colony is a Hutterite community[2] and census-designated place (CDP) in Wheatland County, Montana, United States. It is on the western edge of the county, bordered to the west by Meagher County and 4miles northeast of the unincorporated community of Martinsdale. The Musselshell River forms the southern edge of the CDP.
U.S. Route 12 runs through the southern part of the CDP, leading east to Harlowton, the Wheatland county seat, and west to White Sulphur Springs.
The community was first listed as a CDP prior to the 2020 census.
It is zoned to Harlowton Public Schools.[3]