- Source: William Rea
William Rea may refer to:
William Rea (ironmaster) who lived in Monmouth (now in Wales) in the early 18th century
William Rea (politician), Member of the Queensland Legislative Assembly, Australia
William Rea (real estate magnate) (1912–2006) of Pittsburgh, Pennsylvania
William Rea (athlete) (born 1952), Austrian-American long jumper
William J. Rea (1920-2005), U.S. federal judge