Theodora of Arta was a 13th-century noblewoman and nun from the Byzantine Empire. Born in Servia around 1210, she was the daughter of John Petraliphas and married Michael II Komnenos Doukas. After being removed from the imperial court for five years due to her preference for the Nicaean Empire, she later became the mother of Nikephoros I Komnenos Doukas. Following the death of her husband, she retired to Arta to lead a religious life.