Peter I, Count of Alençon

Peter I
Count of Alençon
Bornc.1251
Atlit, Kingdom of Jerusalem
Died6 April 1284
Reggio Calabria
Spouse(s)Joan, Countess of Blois m. 1272
FatherLouis IX of France
MotherMargaret of Provence

Peter I of Alençon (c. 1251 – 6 April 1284) was the son of Louis IX of France and Margaret of Provence.

He became Count of Alençon in 1269 and in 1284, Count of Blois and Chartres, and Seigneur de Guise in 1272 and 1284. He was also Count of Perche.