Neustadt in Holstein (German: [ˈnɔʏʃtat ʔɪn ˈhɔlʃtaɪn] (listen); Holsatian: Niestadt in Holsteen) is a town in the district of Ostholstein, in Schleswig-Holstein, Germany, on the Bay of Lübeck 30 km northeast of Lübeck, and 50 km southeast of Kiel.