Robert Ritter (1901–1951) was a Nazi German psychiatrist and racial scientist.
Robert Ritter may also refer to:
Robert G. Ritter, American dentist Robert M. Ritter, editor of 2002–2012 editions of the English style manual New Hart's Rules Robert Ritter, fictional CIA character appearing in several Tom Clancy novels
See also Robert Ritter von Greim (1892–1945), German Luftwaffe field marshal