Sarah Wewitzer (1756–1820) was a British actress and singer who styled herself Lady Tyrawley in later life in Ireland.

Her siblings including her elder sister and her brother Ralph Wewitzer were also entertainers.

Wewitzer appeared at the Smock Alley Theatre where she made her home in Dublin.

[2] In 1775, her reputation was compared favourably with the notorious Ann Catley.

[1] Her reputation for purity ended when she set up home with James Cuffe who was the member of parliament for Mayo and had an estranged wife, Mary.