1133, Laguardia, Álava – August 12, 1156) was Queen of Castile, daughter of King García Ramírez of Navarre and his first wife, Margaret of L'Aigle.

Blanca married Sancho III of Castile, regent of Castile (subject to his father Alfonso VII) on February 4, 1151 in Carrión de los Condes, Palencia, after travelling from Calahorra, Logroño, in January.

[4] In addition, she had other children buried in the church of San Pedro in Soria, although they are not identified.

Her sarcophagus lid was preserved, and it represents the queen's deathbed with members of the court, including her husband, mourning her death.

[5] Blanca was buried in the pantheon of the Navarrese kings in the monastery called Santa María la Real of Nájera, to which Sancho made donations on her behalf.