Thomas of Cana copper plates (also spelled Knai Thoma Cheppedu), dated early 9th century AD, are a lost set of copper-plate grants issued by the unidentified Chera/Perumal king of Kerala "Co-qua-rangon" to Christian merchants lead by Knai Thoma (anglicized as Thomas of Cana) in the city of "Makotayar Pattinam" (present day Kodungallur), south India.