Elisabeth Pepys (Élisabeth de St. Michel) (1640–1669) was the wife of Samuel Pepys, whom she married in 1655, shortly before her fifteenth birthday. Her father, Alexandre de St. Michel, was born a French Catholic but converted to the Protestant faith. He married Dorothea, the daughter of Sir Francis Kingsmill, in Ireland. Elisabeth was born at or around Bideford in Devon on 23 October 1640.