Charles McEwen Hyde (June 8, 1832 – October 13, 1899) was a Congregationalist missionary who arrived in Hawaii in 1877. He was instrumental in establishing and supporting schools to educate and train the Hawaiian population of the time. Hyde mentored native Hawaiians who wanted to enter the Christian ministry, and he helped provide smallpox vaccinations for the population. He was a descendant of Scottish Covenanters, and one of the original five trustees of Kamehameha Schools. Private correspondence about Father Damien, penned by Hyde and published without his permission, sparked a heated public rebuke from Robert Louis Stevenson who expressed his belief that sainthood lay ahead for Damien.