Söderängstorp is a settlement in Nynäshamn Municipality, in Stockholm County, Sweden. It has 54 inhabitants. The nearest city is Tumba, 12.7 km to the northeast. Beaches nearby: Grevens bad (7.2 km), Åbynäs (12 km). Among the landmarks around are Drottningholm Palace (27 km), Birka (31 km) and Stockholm Palace (31 km). Among the natural features are Beckholmen (32 km) and Strömsborg (31 km).