Sheikh Baha al-Din al-Amili (1547–1621) was a prominent Islamic scholar, philosopher, engineer, and architect. He made significant contributions to both religious and secular sciences, producing works in mathematics, astronomy, philosophy, jurisprudence, and architecture. During the Safavid era, he played an important role in scientific and architectural developments, being credited with the design of the Shah Abbas Mosque (Juma Mosque) and its adjacent bathhouse in Ganja, as well as the famous bathhouse in Isfahan heated through a special water channel system. His life and works remain an essential chapter in the intellectual history of the East.