Repubacka is a village in Raseborg Municipality, in the region of Uusimaa, Finland. Repubacka lies at 18 m above sea level. The nearest city is Kirkkonummi, 49 km to the east. Beaches nearby: Langasbölenranta (4.7 km), Knipnäs (8.2 km), Ormnäs camping's swimming beach (9.7 km). Among the landmarks around are Raseborg Castle (3.9 km), Pojo Church (10.2 km) and Grabbacka (7.5 km). Among the natural features are Plitorna (9.0 km).