Hadewijch

thumb|Medieval manuscript page of a Hadewijch poem

Hadewijch (), sometimes referred to as Hadewych or Hadewig (of Brabant or of Antwerp), was a 13th-century poet and mystic, probably living in the Duchy of Brabant. Most of her extant writings are in a Brabantian form of Middle Dutch. Her writings include visions, prose letters and poetry. Hadewijch was one of the most important direct influences on John of Ruysbroeck.