Robert Haas may refer to:
Robert Haas (musicologist) (1886–1960), Austrian musicologist Robert Haas (calligrapher) (1898–1997), American calligrapher, typographer, photographer and book designer Robert Haas (clergyman), German clergyman and ecumenist Robert C. Haas, American law enforcement official in Cambridge, Massachusetts Robert M. Haas (1889–1962), American art director Bob Haas (born 1942), owner and executive of Levi Strauss & Co Robert Haas (investor) (1947–2021), American investor, photographer and motorcycle collector Robert Z. Haas, American vinter of the Tablas Creek Vineyard Bob Haas (American football) (1906–1979), American football player Bob Haas (Canadian football), Canadian football player
See also Robert Hass (born 1941), American poet Robert Bernard Hass (born 1962), American poet, literary critic, and professor