Michael Asen III (, Mihail Asen III, commonly called Michael Shishman (Михаил Шишман, Mihail Šišman)), ruled as emperor (tsar) of Bulgaria from 1323 to 1330. The exact year of his birth is unknown but it was between 1280 and 1292. He was the founder of the last ruling dynasty of the Second Bulgarian Empire, the Shishman dynasty. After he was crowned, however, Michael used the name Asen to emphasize his connection with the Asen dynasty, the first one to rule over the Second Empire.