Lázně Kynžvart is a place, that after the Treaty of Saint-Germain belonged to Czechoslovakia and was situated in the administrative region Mariánské Lázně.
Lázně Kynžvart was formerly part of the German Empire. In the German Empire, the place was called Bad Königswart. The place is now called Lázně Kynžvart and belongs to Czech Republic.