Abu Abdallah Muhammad al-Zaghal (the Valiant) (Arabic: أبو عبد الله محمد الثالث عشر) (c. 1444 – c. 1494) was the 23rd Nasrid ruler of Granada in Spain. Christians called him Mahoma XIII el Zagal.
He succeeded his brother in 1485. He abdicated in 1486. After passing the throne to his nephew Muhammad XII, also known as Boabdil, el Zagal ruled over a fractured remnant of the kingdom in its last days.