Nasr (full name Abu'l-Juyush Nasr), was a son of Muhammed II al-Faqih and the fourth Nasrid ruler of the Moorish Emirate of Granada in Al-Andalus on the Iberian Peninsula.
Like his brother and predecessor Muhammed III, he had a refined upbringing and education. He also studied astronomy. On March 14, 1309 he ascended the throne after his brother Muhammed III. He is credited with having constructed the Alhambra tower known as the Peinador de la Reina.