Lohmar (Ripuarian: Luhme) is a municipality and a town in the Rhein-Sieg district, in North Rhine-Westphalia, Germany.

9500), Donrath (2200), Heide (2100) and Birk (1400) in the south, as well as Wahlscheid (3200), Neuhonrath (2000), Honrath (1500) and Agger (1000) in the north.

Lohmar is also mentioned on the Arc de Triomphe in Paris as a place of Napoleon's visit.

While his inspection of the army positioned in the Rhineland in 1811 he lived in Schloss Auel in Lohmar.

The current breakdown after the local elections held on 13 September 2020 is as follows: The CDU and Grünen govern the town as a coalition.