Quirnbach is a local community belonging to an association of municipalities– in the Westerwaldkreis in Rhineland-Palatinate, Germany.

The name's spelling has changed over the centuries from Quirenbach to Querenbach to Quirnbach.

Seat apportionment on council: The nearest Autobahn interchange is Mogendorf on the A 3 (Cologne–Frankfurt).

The nearest InterCityExpress stop is the railway station at Montabaur on the Cologne-Frankfurt high-speed rail line.

Lothar Hermann who was responsible for Detection and Arrest of Adolf Eichmann, has grown up in Quirnbach.