Sir Richard Knightley KB (1617–1661), of Fawsley in Northamptonshire, was an English Member of Parliament (MP). A member of Gray's Inn, Knightley was a member of a prominent Northamptonshire family who had married (in about 1637) Elizabeth Hampden, daughter of John Hampden, the leading opponent of Charles I. His cousin, also called Richard, had been MP for Northamptonshire and one of Hampden's parliamentary allies before the King dismissed Parliament in 1629. Like the rest of his family, Knightley's religious inclinations were Puritan.