Mersereau is a surname. Notable people with the surname include:
Bob Mersereau, Canadian arts journalist Claire Mersereau (1894–1982), American actress, sister of Violet Jacques Mersereau, set decorator Marcelle Mersereau (born 1942), Canadian politician Paul Mersereau (painter) (1873–?), French painter Scott Mersereau (born 1965), American football player Violet Mersereau (1892–1975), American actress
See also Mersereau Ring