Blanche de Navarre (originally Blanche d'Artois) (c. 1248 – May 2 1300), was the regent of Navarre from 1274 to 1284, and later became countess of Lancaster. She was the daughter of count Robert I of Artois, and the granddaughter of Louis VIII of France.
Blanche's first marriage was to Henry I of Navarre (ruled 1270-1274) who died in 1274, her second in 1276 with Edmund of Lancaster (1245-1296), an English prince who was a younger son of Henry III.
From 1274 to 1284 she ruled Navarre and the counties of Brie, Champagne, Troyes et Meaux for her daughter, Joan I of Navarre (ruled 1274 - 1305).
