Dulay or Duley is a surname, that may refer to:
Don Dulay (born 1980), Filipino basketball player Giles Duley (born 1971), British photographer Lang Dulay Larry Dulay Itliong (1913–1977), American labor leader Margaret Duley (1894–1968), Canadian writer Orlando Dulay Thor Dulay (born 1980), Filipino singer
See also Duley (caste) Dulay Qarqi, a village in Iran