Ullerslev is an urban Settlement in Nyborg Municipality, in the region of Southern Denmark, Denmark. Ullerslev lies at 14 m above sea level. It has 2,735 inhabitants (2026). The nearest city is Odense, 18.1 km to the west. Beaches nearby: Sydstranden (9.7 km), Nordstrand (11 km). Among the landmarks around are Nonnebakken (18.0 km), Viking Age Ring Fortresses (18.0 km) and Egeskov Castle (23 km). Among the natural features are Tornø (16.0 km).