| Yahya ibn Ali ibn Ghaniya | |
| Office: | Governor of Valencia |
| Office2: | Governor of al-Andalus |
| Monarch1: | Ali ibn Yusuf Tashfin ibn Ali |
| Office1: | Governor of Murcia |
| Death Date: | 1148 |
| Death Place: | Granada |
| Allegiance: | Almoravid Empire |
| Rank: | Military commander |
| Term Start: | 1133 |
| Term End: | 1145 |
| Termstart1: | 1133 |
| Termend1: | 1145 |
| Termstart2: | 1146 |
| Termend2: | 1148 |
| Monarch2: | Ibrahim ibn Tashfin Ishaq ibn Ali |
| Parents: | Ali ibn Yusuf |
Yahya ibn Ali ibn Ghaniya, more commonly known as Ibn Ghaniya,[1] was governor of Valencia and Murcia (1133-1145) and of al-Andalus (1146-1148).[2] He was son of Ali ibn Yusuf, Almoravid emir, and the princess Ghaniya and brother of, Almoravid vali of Mallorca.[3] He is the first known person of the Banu Ghaniya.
In 1133 he participated in the siege of Fraga, bringing troops from Valencia and breaking the siege. It seems that he had a single combat with the Aragonese king Alfonso the Battler, whom he mortally wounded.[4] When the Taifa revolts against the Almoravids broke out, Yahya ibn Ali ibn Ghaniya commanded the Almoravid troops[5] and faced the revolt but ended up fleeing to Almería.[6] In 1146 he unsuccessfully defended Córdoba against Alfonso VII of León and Castile, of whom he eventually declared himself a vassal. After the Almohad landing on Cádiz in 1146, he was one of the last defenders of the Almoravids and he died in Granada in 1148.