Henry FitzRoy, 1st Duke of Richmond and Somerset (June 15, 1519 – July 23, 1536),is the son of King Henry VIII of England and his mistress, Elizabeth Blount, and the only illegitimate offspring whom Henry VIII acknowledges.

He is the younger half-brother of Mary I, future Queen of England (daughter of Catherine of Aragon), as well as the older half-brother of the future Elizabeth I (daughter of Anne Boleyn) and Edward VI (son of Jane Seymour).

Through his mother he is the elder brother of Elizabeth Tailboys, 4th Baroness Tailboys of Kyme, George Tailboys, 2nd Baron Tailboys of Kyme and Robert Tailboys, 3rd Baron Tailboys of Kyme.