| Official Name: | Hammerdal |
| Pushpin Map: | Sweden Jämtland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Strömsund Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Jämtland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Jämtland |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.29 |
| Population As Of: | 31 December 2010 |
| Population Total: | 974 |
| Population Density Km2: | 425 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 63.5833°N 36°W |
Hammerdal (pronounced as /sv/)[2] is a locality in Strömsund Municipality, Jämtland County, Sweden. It had 974 inhabitants in 2010. It is historically associated with Hammond, Louisiana, USA, by way of a Swedish immigrant who founded the Louisiana city.