Stefanie Rabatsch (née Isak; born 28 December 1887) was an Austrian woman. She was alleged by August Kubizek to have been an unrequited love of Adolf Hitler, the future leader of the Nazi Party and dictator of Nazi Germany, when he was a teenager. Her Jewish-sounding maiden name has been subject to speculation in this context. However there is no evidence apart from Kubizek that Hitler ever had such an attachment.
Kubizek, a childhood friend and later biographer of his childhood experience with Hitler, wrote about Stefanie in his book, Adolf Hitler, My Childhood Friend. He alleges that Hitler fell in love with her after she passed by him during her daily daughter-mother stroll in Linz, glancing at him. In Kubizek's account, although in love with her to the point of suicide, Hitler never once spoke with her, and she later married an Austrian army officer. Stefanie stated in interviews that she was unaware of Hitler's feelings towards her, and little is known about her life.
The one-sided relationship has been discussed in many books. Some question the accuracy of Kubizek's memoir, the only source for the story. Others accept that there is some basis of fact, but downplay the significance of the youthful infatuation, while yet others consider that it gives valuable insight into the development of Hitler's personality.
August Kubizek, a music student from Linz, first met Hitler when the two were competing for a place to stand during an opera performance. According to him, Hitler's passion for Stefanie began in spring 1905, when he was 16 and attending school in Linz, and lasted until 1909, when he was 20. Kubizek recalls the first time he heard about Hitler's obsession in his memoirs:
“One evening in the spring of 1905, as we were taking our usual stroll, Adolf gripped my arm and asked me excitedly what I thought of that slim blonde girl walking along the Landstrasse arm-in-arm with her mother. 'You must know, I'm in love with her,' he added resolutely.”
Stefanie Beata Isak was born on 26 December 1887 in Niemes, Bohemia. She came from a family of higher social class than Hitler's and was more than a year older than him. Stefanie had returned to Linz after professional training in Munich and Geneva. She had a brother, Karl Richard Isak, who was studying law in Vienna. In the 1950s Dr. Franz Jetzinger had two pictures of Stefanie in her youth, one from 1904 and one in ball dress from 1907. Kubizek describes her as "a distinguished-looking girl, tall and slim. She had thick fair hair, which she mostly wore swept back in a bun. Her eyes were very beautiful".