Thomas Radclyffe, 3rd Earl of Sussex

The Right Honorable The Earl of Sussex KG
The Earl of Sussex, c. 1575-80
Lord Lieutenant of Ireland
In office 6 May 1560 – 13 October 1565
Monarch	Elizabeth I
Preceded by	Himself as Lord Deputy
Succeeded by	Sir Henry Sidney
Personal details
Born	1525
Died	9 June 1583 (aged 57–58)
Spouse(s)	Elizabeth Wriothesley Lady Frances Sidney (m. 1555-1583)
Parents	Henry Radclyffe, 2nd Earl of Sussex (father) Elizabeth Howard (mother)
Religion	Roman Catholicism

Thomas Radclyffe (or Ratclyffe), 3rd Earl of Sussex KG (c. 1525 – 9 June 1583), was Lord Deputy of Ireland during the Tudor period of English history, and a leading courtier during the reign of Elizabeth I.