Abul Qasim ibn Mohammed ibn Ibrahim al-Wazir al-Ghassani al-Andalusi (Arabic: قاسم بن محمد الغساني‎) (1548–1610) was a famous physician at the Saadian court. He studied medicine with his father. He lived in Marrakesh and Fez and was of Morisco descent. It is probable that he was the author of Hadiqat al-azhar fi mahiyyat al-ushb wa-l-aqqar (Garden of Flowers in the Explanation of the Character of Herbs and Drugs), a treatise on pharmacology and botany. A hospital in Fez was named after him.