| Official Name: | Resarö |
| Pushpin Map: | Sweden Stockholm#Sweden#European Union |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Vaxholm Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Stockholm County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Uppland |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.50 |
| Population As Of: | 31 December 2020 |
| Population Total: | 3,212 |
| Population Density Km2: | 951 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.4333°N 38°W |
Resarö is an island in the Stockholm archipelago and a locality in Vaxholm Municipality, Stockholm County, Sweden. It had 3,212 inhabitants in 2020. Resarö includes the hamlet of Ytterby, famous for the discovery of several rare-earth elements in a local mine.[1] [2]
At its southern end, the island is crossed by, with a bridge to the south linking it to the island of Kullö and, via that, to the Vaxholm urban area. To the west, a bridge links to the mainland via the islet of Bullerholmen. Local roads connect the county road with centres of population to the north of the island. Except for the winter months, passenger ships of the Waxholmsbolaget call at a pier in Ytterby, providing a connection to Vaxholm town and Stockholm city.[2] [3] [4] [5]
The old form of the name was Risarna. The first element is ris 'brushwood' - the last element is derived from arin 'gravel; island made by gravel'. The last element ö 'island' was added in the 16th century.May 2023.