Michael Glykas or Glycas () was a 12th-century Byzantine historian, theologian, mathematician, astronomer and poet. He was probably from Corfu and lived in Constantinople. He was a critic of Manuel I Komnenos, and was imprisoned and blinded due to his participation in a conspiracy against the emperor. He is also identified by modern scholarship with Michael Sikidites (Μιχαὴλ Σικιδίτης), who was condemned as a heresiarch in 1200.
Life
thumb|right|200px|Manuscript miniature of [[Manuel I Komnenos, Vatican Library]]
Glykas was born sometime in the first third of the 12th century, possibly . His probable birthplace was Corfu.
Works
His first known work were his Verses from Prison, a poem of 581 lines in political verse, written during his imprisonment. It contains many elements of the vernacular Greek language of his time (an early form of Modern Greek), in contrast to the highly stylized and archaic Attic Greek favoured by Byzantine intellectuals.