Katrin Himmler (born 1967) is a German author. She is the granddaughter of Ernst Himmler (1905–1945), and great-niece of his older brother Heinrich Himmler, one of the leading figures of Nazi Germany. She is the author of Die Brüder Himmler: Eine deutsche Familiengeschichte, published in English as The Himmler Brothers: A German Family History.