The Sidna 'Ali Mosque (Arabic: مسجد سيدنا علي, Masjid Sidna 'Ali; Hebrew: מסגד סידנא עלי, Misgad Sidna Ali) is a mosque located in the depopulated village of Al-Haram on the beach in the northern part of Herzliya in Israel.
The mosque was originally a 13th-century Mamluk construction built in honour of one of Saladin's lieutenants who fought bravely against the Crusaders and died in a battle on the hill on which the mosque now stands. His shrine is now housed within the building.
Ephrat, Daphna (2009): The Shaykh, the Physical Setting and the Holy Site: the diffusion of the Qadiri path in late medieval Palestine. In JRAS (Journal of the Royal Asiatic Society), Series 3, 19, 1 (2009), pp. 1–20.