| Official Name: | Dalarö |
| Pushpin Map: | Sweden Stockholm#Sweden#European Union |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Haninge Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Stockholm County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Södermanland |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.68 |
| Population As Of: | 31 December 2020 |
| Population Footnotes: | [2] |
| Population Total: | 1915 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.1333°N 42°W |
Dalarö is a locality situated in Haninge Municipality, Stockholm County, Sweden with 1,199 inhabitants in 2010.
It is situated south-east of Stockholm and is part of Metropolitan Stockholm and serves as a recreational summer spot for Stockholmers. At the beginning of the year 2004, the automobile company Volvo used the town for the unconventional The Mystery of Dalarö advertising campaign.
Dalarö is Haninge Municipality's oldest locality, originally an old maritime pilot and customs community. Today Dalarö is largely characterized by the developments which were added in the late 1800s, when the area became a popular summer resort for Stockholmers. Dalarö has long been home to Swedish high society's seaside houses. Since the 19th century, the town of Dalarö has been a holiday resort for the international guests. The historical valuable buildings are of national interest. Dalarö and the surrounding built-up area has a diverse year-round and summer cottages. During the summer months Dalarö is frequented by many tourists.