| Official Name: | Ersmark |
| Pushpin Map: | Sweden Västerbotten#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Umeå Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västerbotten County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Västerbotten |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.21 |
| Population As Of: | 31 December 2010 |
| Population Total: | 1,613 |
| Population Density Km2: | 1337 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 63.8833°N 39°W |
Ersmark is a locality situated in Umeå Municipality, Västerbotten County, Sweden with 1,613 inhabitants in 2010.