John Challoner MP (c. 1520–1581) was the first Secretary of State for Ireland, appointed by Queen Elizabeth I of England in 1560. He also sat at different times as a member of parliament in both the Parliament of England and the Parliament of Ireland. He should not be confused with his contemporary, Alderman John Challoner, Mayor of Dublin between 1556 and 1557, who died in 1565.[1][2]