| Official Name: | Finsta |
| Pushpin Map: | Sweden Stockholm#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type1: | Province |
| Subdivision Name1: | Uppland |
| Subdivision Type2: | County |
| Subdivision Name2: | Stockholm County |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Norrtälje Municipality |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.36 |
| Population As Of: | 31 December 2020 |
| Population Footnotes: | [2] |
| Population Total: | 248 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.7369°N 18.4936°W |
Finsta (pronounced as /sv/)[3] is a locality situated in Norrtälje Municipality, Stockholm County, Sweden with 244 inhabitants in 2010.
Finsta is according to local tradition the birthplace of Saint Bridget, one of Sweden's best known saints and the founder of the Bridgettine Order of nuns. Her father was the lawspeaker of Uppland and a local landowner; however other birthplaces have also been suggested.