Theodore Komnenos Doukas

Theodore Komnenos Doukas (born 1180–1185, died c. 1253) was a Greek prince of imperial descent who took power in Epirus after his half-brother Michael I died in 1215. He had served Theodore I Laskaris in Nicaea before joining Michael in Epirus.

He captured Latin emperor Peter of Courtenay in 1217 and took Thessalonica in 1224, crowning himself emperor there. In 1230 Bulgaria's Tsar Ivan Asen II defeated and captured him at Klokotnitsa, and Theodore was blinded in captivity.

Freed in 1237, he ruled Thessalonica through his sons until Nicaea annexed the city in 1246, and he died in Nicaean exile around 1253.