Sigeferth was a medieval Bishop of Lindsey.

Sigeferth was consecrated before 996. He died after 1004.^[1] This was a revival of the see, which had lapsed during the Danish invasions.^[2]

• Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge: Cambridge University Press. ISBN 0-521-56350-X.
• Williams, Ann (2003). Aethelred the Unready: The Ill-Counselled King. London: Hambledon & London. ISBN 1-85285-382-4.

• Sigefrith 20 at Prosopography of Anglo-Saxon England