Polonceau
Polonceau stands for:
- Camille Polonceau (1813–1859), French railway engineer, bridge builder, inventor of the Polonceau truss
- Antoine-Rémy Polonceau (1778–1847), French railway engineer, father of Camille Polonceau
- Gustave Ernest Polonceau (1832–1900), French railway engineer, cousin of Camille Polonceau