Flatvarp is a village in Västervik Municipality, in Kalmar County, Sweden. Flatvarp lies at 14 m above sea level. The nearest city is Västervik, 27 km to the southwest. Beaches nearby: Ytterbystranden (1.3 km). Among the landmarks around are church of Östra Ed (9.2 km), Loftahammar Church (10.3 km) and Lofta Church (21 km).