Ferdinand Porsche was born in modern-day Czech Republic, then Austria-Hungary, and later held Austrian and German citizenship. Morgenstern, while German-born, resided in Austria and the US. Gödel grew up in Czechoslovakia and considered himself an Austrian. He was German in the way someone from Belgium in the 1940s was German. Et cetera.

Due to changing borders, I'm not attributing Austria-Hungary's borders, but people who held Austrian citizenship after the breakup or resided in Austria proper were Austrian, regardless of where they were born. I'm ignoring the notion that Jews can't Austrian.