Abū Manṣūr Muḥammad ibn Aḥmad al-Azharī (Arabic: أبومنصور محمد بن أحمد الأزهري; 282–370 AH/895–980 AD) or simply known as Abu Mansur al-Azhari (أبومنصور الأزهري), was an Arab lexicographer, philologist and grammarian of Arabic. a prominent philologist of his time, known for his talents and the transmitting of philological knowledge. His most important work is Tahdhib al-Lughat (تهذيب اللغات; The Concise Guide of Languages).