{{wiktionary|Nadeau}} '''Nadeau''' may refer to:
== People == * Bradly Nadeau (born 2005), Canadian ice hockey player * Brian Nadeau, American politician * Brianne Nadeau (born 1980), American politician * Catherine Nadeau, American politician * Cathy Nadeau, American politician * Jacques Nadeau (1953–2025), Canadian photojournalist * Jerry Nadeau (born 1970), American race car driver * Joseph-Armand Nadeau (1928–1963), Canadian politician * Joseph P. Nadeau (born 1936), justice of the New Hampshire Supreme Court * Kelly-Ann Nadeau (born 1998), Canadian ice hockey player * Louise Nadeau (born 1947), Canadian psychologist * Luann de Lesseps (née Nadeau, born 1965), American celebrity * Marcellin Nadeau (born 1962), French politician * Remi Nadeau (1920–2016), American historian * Richard Nadeau (born 1959), Canadian teacher and politician from Quebec * Robert Nadeau (aikidoka) (born 1937), American aikido teacher * Robert Nadeau (science historian) (1944–2025), American environmental scientist and science historian * Samuel Nadeau (born 1982), French basketball player
== Places == * Nadeau Township, Michigan
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