Khoja Zufar or Coje Çafar, also called Coge Sofar, or Safar Aga in Portuguese, Cosa Zaffar in Italian, and Khwaja Safar Salmani in Turkish or Khuádja Tzaffar in Arabic, was a soldier and local ruler in Western India during the 16th century. He was a leader in the failed Siege of Diu. Zufar was an experienced merchant with the distant markets of the Arabian Gulf around the Strait of Mecca and Lepanto at the Mediterranean.

The siege of Diu occurred when an army of the Sultanate of Gujarat under Khadjar Safar, aided by forces of the Ottoman Empire, attempted to capture the city of Diu in 1538, then held by the Portuguese. The Portuguese successfully resisted the four months long siege. It is part of the Ottoman-Portuguese war.