Maximos Sedfaoui (17 August 1863 – 27 February 1925) was the locum tenens and Apostolic Administrator (مدبّر رسولي) of the Coptic Catholic Church after the resignation of Patriarch Kyrillos Makarios in 1908.
He was ordained as a Coptic Catholic priest in Beirut on 29 June 1889 and returned to Egypt.
Also known as Joseph-Maxime Sedfaoui (sometimes Sedfawi), he was appointed Coptic Catholic Bishop of Hermopolis (Minia) from 1896.
He was also appointed as Apostolic Administrator, a post he carried simultaneously from 1908 onwards until his death in 1925.
He was succeeded by locum tenens Markos Khouzam starting 1927 until the latter's election as Patriarch in 1947.