Robert Freiherr von Heine-Geldern (16 July 1885 - 25 May 1968), known after 1919 as Robert Heine-Geldern, was an Austrian anthropologist, ethnologist, archaeologist and prehistorian who studied in particular the cultures and civilisations of Southeast Asia. He taught as a professor of ethnology and archaeology of India and Southeast Asia at the University of Vienna and, during his emigration from 1938 to 1949, in the United States. Heine-Geldern is considered a pioneer in the field of Southeast Asian Studies.