Henry IV

Henry IV could mean:
Henry IV of England (1367–1413), English king
Henry IV, Pt. 1, a play by William Shakespeare
Henry IV, Pt. 2, a play by William Shakespeare, sequel to the one above
Henry IV of France (1553–1610), French king
Henry IV, Holy Roman Emperor (1050–1106), German king and Holy Roman Emperor
Henry IV Probus (c. 1258–1290), a Silesian duke