Catherine of Bosnia was the queen consort of Bosnia during the mid-15th century, married to King Thomas. Born into the influential House of Kosača, her marriage in 1446 served to stabilize relations between the crown and her father, Stjepan Vukčić. A devoted member of the Third Order of Saint Francis, she converted to Roman Catholicism and actively supported the faith by funding the construction of numerous churches across her realm. Following the Ottoman conquest of Bosnia, she lived in exile in Rome, where she remained until her death in 1478.