Stephen Peter Rigaud (12 August 1774–16 March 1839) FRAS[1] was an English mathematical historian and astronomer.

A well-informed friend has said of him, — " He had a peculiar delight in tracing the history of an invention, or illustrating the biography of those who, however eminent in their day, were in after ages known to have lived, flourished for a time, and died.

"[4] He died on 16 March 1839 and was buried at St James, Piccadilly, London, where a memorial to him lies in the church.

His eldest son, Stephen Jordan Rigaud (1816–1859), was an English clergyman and schoolmaster who became Bishop of Antigua.

Some of his large book collection, concerning astronomy, mathematics and physics, was purchased by the Radcliffe Observatory in Oxford.