Juliana Dias da Costa

Mughal-era portrait of Bibi Juliyana as an elderly woman, dated c. 1730-50

Dona Juliana Dias da Costa (1658–1733) was a woman of Portuguese descent from Kochi taken to the Mughal Empire's court of Aurangzeb in Hindustan, who became a Harem-favorite of the Mughal emperor of India Bahadur Shah I, Aurangzeb's son, who became the monarch in the year 1707.