Heydrich is a German surname. Notable people with the surname include:
Reinhard Heydrich (1904–1942), high-ranking German Nazi official during World War II and a major perpetrator of the Holocaust
Lina Heydrich (1911–1985), wife of Reinhard Heydrich
Heinz Heydrich (1905–1944), younger brother of Reinhard Heydrich
Richard Bruno Heydrich (1865–1938), German opera singer and composer, father of Reinhard Heydrich