The Monastir Synagogue (Hebrew: קהל קדוש מונאסטירליס; Judaeo-Spanish: Kal de los Monastirlis) is a former Orthodox Jewish congregation and synagogue of the once vibrant Jewish community in Thessaloniki, Greece.

The funding was provided by Jews from Monastir in the Kingdom of Yugoslavia, chiefly by Ida Aroesti, in the memory of her late husband Isaac, and the families Camhi, Joseph Nahmias, Massot, Barouch, Halevi, Israel, Calderon, Faradji, and Meir.

The consecration by the locum tenens Chief Rabbi of Thessaloniki, Haim Raphael Habib, took place on September 24, 1927 (Eloul 27, 5687).

)[citation needed] During World War II, the synagogue was saved by being requisitioned by the Red Cross.

There is a new synagogue shared with the Rabbinate and the offices of the Jewish Community of Thessaloniki at Tsimiski Street downtown.