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