MUSTAPHA, the name of several Turkish sultans. Mustapha I. succeeded his brother Achmed I. in 1617, was deposed a few months afterwards, was restored to the throne in 1622, was again deposed in 1623, and was strangled in 1639. Mustapha II. succeeded his uncle Achmed II. in 1695, was deposed in 1703, and died in 1704. Mustapha III. succeeded his cousin Othman III. in 1757, and died in 1774. Mustapha IV. succeeded Selim III. in 1807, was deposed in 1808, and was murdered by his brother Mahmud in 1809. (See TURKEY.)