Ealhferth or Ealhfrith was a medieval Bishop of Winchester. He was consecrated between 862 and 867. He died between 871 and 877.^[1]

• 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.

• Ealhfrith 4 at Prosopography of Anglo-Saxon England