Belleau may refer to:
People
- Anthony Belleau (born 1996), French rugby footballer
- Bernard Belleau (1925–1989), Canadian chemist
- Isidore-Noël Belleau (1848–1936), Canadian politician
- Lesley Belleau, Canadian Anishinaabe writer
- Narcisse-Fortunat Belleau (1808–1894), first Lieutenant Governor of Quebec
- Rémy Belleau (1528–1577), French playwright
Places
- France
- United Kingdom