Heinrich "Hein" Kröher (September 17, 1927 – February 14, 2016) and Oskar "Oss" Kröher (September 17, 1927 – July 1, 2019) were German twins who were folk singer-songwriters. They were born in Pirmasens, Rhineland-Palatinate. Heinrich and Oskar Kröher were performing more than fifty years on the stages in Europe and North America. They wrote songs about the Hecker uprising.