Ali Bitchin (c. 1560-1645) was a "renegade" (Christian converted to Islam) who made his fortune in Algiers through privateering. Bitchin (or Bitchnin) was believed to be born with the family name of Piccini or Puccini or Piccinino in Venice. He was a Grand Admiral of Algiers and is known for a mosque he built in the district of Zoudj-Aïoun in the old city (Casbah), which still bears his name today.
Bitchin became particularly well known through the captivity narratives published by Emanuel D'Aranda, his slave for about a year from 1640 to 1641.