Frederick Henry may refer to:

Frederick Henry, Prince of Orange (1584–1647), Prince of Orange and stadtholder of Holland, Zeeland, Utrecht, Guelders, and Overijssel

Frederick Henry, Duke of Saxe-Zeitz-Pegau-Neustadt (1668–1713), German prince of the House of Wettin

Frederick Henry, Margrave of Brandenburg-Schwedt (1709–1788), last owner of the Prussian secundogeniture of Brandenburg-Schwedt

Frederick Henry of Nassau-Siegen (1651–1676)

Frederick Henry, Hereditary Prince of the Palatinate (1614–1629)

Frederick Henry (cyclist) (1929–2013), Canadian Olympic cyclist

Frederick Henry (bishop) (1943–2024), Roman Catholic bishop in Calgary, Canada

F. C. Henry (Frederick Charles Henry), British trade unionist and political activist

Frederick F. Henry (1919–1950), Medal of Honor recipient

Snake Henry (1895–1987), American baseball player and manager, born Frederick Marshall Henry