'''Guilbault''' is a surname. Notable people with the surname include:
*Édouard Guilbault (1834–1903), Canadian manufacturer, merchant and politician from Quebec *Élise Guilbault (born 1961), Canadian film and television actress *Geneviève Guilbault (born 1982), Canadian politician *Jacques Guilbault (born 1936), Canadian politician *Jean-Guy Guilbault (1931–2022), Canadian businessman and politician *Jocelyne Guilbault, Canadian ethnomusicologist *Muriel Guilbault (1922–1952), Canadian actress and comedian *Roland Guilbault (1934–2012), American Navy rear admiral
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