Michael of Thessaloniki was a 12th-century Byzantine orator. There is not much information about Michael in modern sources. He was one of the most prominent Byzantine orators of the 12th century, and held the title of "master of rhetoric", which was synonymous to the position of professor at the Patriarchal College of Constantinople in Hagia Sophia. At the same time, he was also a professor of evangelicals at the same school, and he also held the title of protekdikos, the chief legal advisory to the bishop, part of the exokatakoiloi. His career ended in 1156, when he was accused of being a follower of the heresy of Patriarch of Antioch, Sotirios Pantevgenos. Pantevgenos was condemned on 26 January 1156 for his heretical interpretation of the Eucharistic liturgy.