Ratzinger is a German surname. Notable people with the surname include:
Pope Benedict XVI, born Joseph Aloisius Ratzinger
Georg Ratzinger, a Catholic priest, musician, conductor, and brother of Pope Benedict XVI
Georg Ratzinger (politician), a Catholic priest, author, politician, and great-uncle of Georg Ratzinger and Pope Benedict XVI
Joseph Ratzinger, Sr., the father of Georg Ratzinger and Pope Benedict XVI
Wumpscut, born Rudolf 'Rudy' Ratzinger