The Poncelet is a unit of power formerly used in France.
Poncelet may also refer to:
, a Vichy French submarine sunk off the coast of Gabon during the World War II Battle of Gabon Poncelet (crater), the remains of a lunar impact crater near the northern limb of the Moon Christian Poncelet (1928–2020), French politician Jean-Victor Poncelet (1788–1867), French engineer and mathematician Matthew Poncelet, the character played by Sean Penn in the 1995 film Dead Man Walking, based on real-life death-row inmate Elmo Patrick Sonnier
See also Poncelet Prize, a mathematics prize by the French Academy of Sciences Poncelet's closure theorem, mathematics Poncelet–Steiner theorem, mathematics and geometry.