Anna Marcella Giffard (1707-1777) was an Irish stage actress. She was a member of the Lyddal acting family of Dublin, and began appearing herself at the Smock Alley Theatre under the name of Nancy Lyddal in the 1720s. In around 1728 she married the English actor Henry Giffard who had been acting at Smock Alley for some years. He had previously been married to Mary Lyddal, probably Anna Marcella's sister, with whom he had two children including . After the marriage she was generally styled Mrs Giffard on playbills.