Hassan Abdullah Hamdan (Arabic: حسن عبد الله حمدان), more commonly known by his pseudonym Mahdi 'Amel (Arabic: مهدي عامل), (Harouf, Lebanon 1936 - Beirut, Lebanon 18 May 1987) was a Lebanese Marxist intellectual and militant in the second half of the 20th century. 'Amil was a professor of philosophy at the Lebanese University in Beirut, and a prominent member of both the Lebanese Communist Party and the Union of Lebanese Writers. He also contributed to the magazine al-Tariq, the mouthpiece of the Lebanese Communist Party.