Stephen Peter Rigaud (1774–1839) was an English mathematical historian and astronomer. He was a Fellow of Exeter College, Oxford from 1794 to 1810, held the Savilian Chair of Geometry at the University of Oxford from 1810 to 1827, and was Savilian Professor of Astronomy from 1827 to 1839.Rigaud was the son of Stephen Rigaud, Observer at Kew Observatory. The family was French Protestant. He lived at 21 Richmond Green in Richmond, Surrey (now Richmond, London).