Ludendorf is a village in the municipality Swisttal in the North-Rhine-Westphalian Rhein-Sieg district. It is situated approx. 18 km southwest of Bonn. On January, 1 2007 the village had a population of 539. [1]. The city hall of the municipality Swisttal is located between Ludendorf and the neighboring village Swisttal-Essig.