Theodora Palaiologina Kantakouzene Raoulaina (Greek: Θεοδώρα Κομνηνή Καντακουζηνή Παλαιολογίνα Ραούλαινα, c. 1240–1300) was a Byzantine noblewoman, the niece of Emperor Michael VIII Palaiologos (r. 1259–1282). Widowed twice, she clashed with her uncle over his unionist religious policies, and became a nun. She also restored the monastery of Saint Andrew in Krisei, to where she transferred the relics of Patriarch Arsenios Autoreianos. Highly educated, she was a prominent member of the capital's literary circles at the close of the 13th century.