Harlardus (or Alhheard or Eahlheard) was a medieval Bishop of Dorchester.

Harlardus was consecrated between 869 and 888 and died between 893 and 896.^[1]

• Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge, UK: Cambridge University Press. ISBN 0-521-56350-X.

• Ealhheard 6 at Prosopography of Anglo-Saxon England