The Hair-crested Drongo or Spangled Drongo (Dicrurus hottentottus) is an Asian bird of the family Dicruridae. It is native from India and Bhutan through Indochina to China, Indonesia, and Brunei (BirdLife International 2008). Hair-crested Drongos move in small flocks and are very noisy.

This species was formerly considered conspecific with Dicrurus bracteatus, for which the name "Spangled Drongo" is now usually reserved. Some authorities consider it conspecific with the Sumatran Drongo (Lepage 2003).