Riddiford may refer to:
Antarctic landform: Riddiford Nunatak in the Churchill Mountains, Oates Land
People: Charles Ernest Riddiford (18971968), Cartographer and typeface designer at National Geographic Society Dan Riddiford (19141974), New Zealand politician Edward Riddiford (18421911), New Zealand farmer and runholder, known as "King" Riddiford Earle Riddiford (19211989), New Zealand lawyer and mountain climber Lynn Riddiford (b. 1936), American entomologist and biologist