Karl Apfelbacher was a German mathematician who served as minister for higher public education in Upper Bavaria-East.[1] He was a student of Arnold Sommerfeld and Heinrich Tietze[2] at the University of Munich, where he received his doctorate in 1939.[3] He went into teaching mathematics and science, as well as administration, in secondary schools. In 1964, he was cited as being Oberstudiendirektor[4] at the Oberrealschule[5] in Burghausen, Altötting. On October 16, 1964, the school was taken over by the Bayerischen Staatsministeriums für Unterricht und Kultus.[6]