Fjällbacka is a locality situated in Tanum Municipality, Västra Götaland County, Sweden with 859 inhabitants in 2010.

Fjällbacka is mostly known as a summer tourist resort, with a long history, and as the setting for many of best-selling Swedish noir writer Camilla Läckberg's novels.

Fjällbacka is located approximately 150 km from Gothenburg, 165 km from Oslo and 520 km from Stockholm.