Leonard Melki (4 October 1881 – 11 June 1915) – born Yūsuf Habīb Melkī and in religious Līūnār from B'abdāt – was a Roman Catholic priest and a professed member of the Order of Friars Minor Capuchin. His name is often Romanized in various texts. Melki became a priest before serving as a preacher and teacher in different stations of the Mission of Armenia and Mesopotamia of the Capuchin Order. He eventually became the principal of the school of the Capuchin Order in Mardin where he taught the French language and music. He was later killed in Mardin on June 11, 1915 with a convoy of displaced Armenians, Syriacs, Chaldeans, Protestants, by Turkish soldiers during the genocide World War I.