La Vallée Poussin
La Vallée Poussin is the name of the following people:
- Charles-Jean de La Vallée Poussin (1866–1962), Belgian mathematician
- Charles Louis de la Vallée-Poussin (1827–1903), Belgian geologist and mineralogist
- Louis de La Vallée Poussin (1869–1938), Belgian orientalist
