Sillvik is a village in Söderhamn Municipality, in Gävleborg County, Sweden. Sillvik lies at 2 m above sea level. The nearest city is Gävle, 46 km to the south. Among the landmarks around are Hamrånge Church (18.4 km), Skogs kyrka, Hälsingland (19.4 km) and Ljusne Church (14.5 km).