Harry \ha(r)-ry\ as a boy's name is pronounced HARE-ee. It is of Old German origin, and the meaning of Harry is "home ruler". The English version of the French pronunciation of Henri (aw-REE). It's used as a nickname of Henry and Harold. American use may be homage to President Harry S. Truman. Fictional character Harry Potter has also influenced the name. Prince Henry of Wales is widely known as Harry. Actor Harry Belafonte; American Supreme Court Justice Harry A. Blackmun; magician Harry Houdini.