Matthaios Kamariotis (b. Thessaloniki, late 14th c. - d. Constantinople, 1489)
He received his early education in Thessaloniki, but shortly before the fall of the city, his family emigrated to Constantinople where he worked as a teacher. Among his students was Georgios Gennadios. After Constantinople surrendered, when Gennadios became patriarch, he appointed him instructor in the city's Patriarchal School. He died in 1489, leaving a significant body of work behind him.

His major works are "A Condensed Lecture on Rhetoric", "Two speeches to Plethon on destiny", "A Synopsis of the Rhetoric of Ermogenes", "An explanation of the symbol of faith", etc.