Kirburg is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.

The Wäschebach, which belongs to the Sieg drainage basin, flows through the municipal area.

Kirburg belongs to the Verbandsgemeinde of Bad Marienberg, a kind of collective municipality.

Running right through the community is Bundesstraße 414, leading from Driedorf-Hohenroth to Hachenburg.

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