Duppa may refer to:
Brian Duppa (1588–1662), English bishop Phillip Darrell Duppa (1832–1892), pioneer in the settlement of Arizona, USA Richard Duppa (1770–1831), English writer and draughtsman Thomas Duppa (fl. 1554), English member of parliament Jack Duppa-Miller (1903–1994), Royal Navy officer who was awarded the George Cross Vic Duppa-Whyte (1934–1986), British paper engineer and author