| Official Name: | Whitemouth |
| Pushpin Map: | Canada Manitoba |
| Pushpin Map Caption: | Location of Whitemouth in Manitoba |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Manitoba |
| Subdivision Type2: | Region |
| Subdivision Name2: | Eastman |
| Subdivision Type3: | Rural Municipality |
| Subdivision Name3: | Whitemouth |
| Leader Title: | MP (Provencher) |
| Leader Name: | Ted Falk (CPC) |
| Leader Title1: | MLA (Lac du Bonnet) |
| Leader Name1: | Wayne Ewasko |
| Area Land Km2: | 3.26 |
| Population As Of: | 2016[1] |
| Population Total: | 303 |
| Population Density Km2: | 92.9 |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code: | R0E 2G0 |
| Coordinates: | 49.9542°N -95.9753°W |
| Elevation M: | 276 |
| Website: | rmwhitemouth.com |
Whitemouth is a community in the Rural Municipality of Whitemouth, located in southeastern Manitoba, Canada. The community is named after the Whitemouth River. It was established in 1905 along the main Canadian Pacific Railway line.
In the 2021 Census of Population conducted by Statistics Canada, Whitemouth had a population of 387 living in 166 of its 189 total private dwellings, a change of from its 2016 population of 303. With a land area of, it had a population density of in 2021.[2]