Redburga or Raedburh was the wife of king Egbert of Wessex and may have been the sister-in-law of Charlemagne as the sister of his fourth wife, Luitgarde.

According to some accounts, Charlemagne arranged Raedburh's marriage to Egbert in the year 800. Egbert, who had been forced into exile at Charlemagne's court by Offa, King of Mercia, returned to England in 802, where he became King of Wessex and later king of all England. Raedburh's son Ethelwulf succeeded Egbert. Raedburh was also, according to this version of events, the grandmother of Thyra Dannebod Queen of Denmark, who was the wife of the Viking King Gorm "the Old" of Denmark and the mother of Harald Bluetooth Blataand King of Denmark.