| Muhammad VIII | |
| Succession: | Sultan of Granada (1st reign) |
| Reign1: | 1417–1419 |
| Predecessor1: | Yusuf III of Granada |
| Successor1: | Muhammad IX of Granada |
| Succession2: | Sultan of Granada (2nd reign) |
| Reign2: | 1427–1429 |
| Predecessor2: | Muhammad IX of Granada |
| Successor2: | Muhammad IX of Granada |
| House: | Nasrides |
| House-Type: | Dynasty |
| Father: | Yusuf III |
| Mother: | Umm al-Fath (I) |
| Birth Date: | 1411 |
| Birth Place: | Alhambra |
| Death Date: | 1431 |
| Religion: | Islam |
Muhammad VIII (; 1411–1431), known as "the left handed", was the fourteenth Nasrid ruler of the Islamic Emirate of Granada in Al-Andalus on the Iberian Peninsula.
He, as eldest son, became Sultan after the death of his father Yusuf III.[1] His first reign lasted from 1417 to 1419, and his second from 1427 to 1429.[2] Immediately after coming to the throne, Muhammad renewed the treaties between Granada, Castile and the Marinids, and sent troops to help the Marinids in the Siege of Ceuta in 1418.