| Official Name: | Östhamra |
| Pushpin Map: | Sweden Stockholm#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Norrtälje Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Stockholm County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Uppland |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.78 |
| Population As Of: | 31 December 2010 |
| Population Total: | 255 |
| Population Density Km2: | 328 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.75°N 61°W |
Östhamra is a locality in Norrtälje Municipality, Stockholm County, Sweden. It is situated just to the south of the town of Norrtälje. It had 255 inhabitants in 2010.