Morneau is a surname of French origin, and may refer to:
Bill Morneau (born 1962), Canadian businessman and politician David Morneau (born 1975), American composer Isabelle Morneau (born 1976), Canadian soccer player Jack Morneau (born 1926), Canadian football player Justin Morneau (born 1981), Canadian baseball player Louis Morneau, American film director and scenarist Marie-Josée Morneau (born 1969), Canadian judoka Michelle Morneau, one of the perpetrators of the 1999 Kingwood robbery incidents Robert F. Morneau (born 1938), American Catholic clergyman Roger Morneau (1925–1998), Canadian spiritual writer
See also Morneau Shepell, a company later known as LifeWorks