Neudietendorf is a village and a former municipality in the district of Gotha, in Thuringia, Germany. Since 1 December 2009, it is part of the municipality Nesse-Apfelstädt. Since the mid-18th Century it has been the seat of a Congregation of the Moravian Church (Moravian Brethren, Herrnhuter Brüdergemeinde) who established well-known industries and schools in their settlement.