Batthyány's sanctuary lamp (Hungarian: Batthyány Lajos-örökmécses) is a national monument, located at the corner of Báthory Street and Hold Street in Lipótváros, Budapest, Hungary. It sits on the former location of the courtyard of the New Building, where Count Lajos Batthyány (1807–1849), the first Prime Minister of Hungary, was executed on 6th October 1849. This monument has been the site of several street demonstrations of opposition in 1941, 1943 and 1988.