Sancho Ramírez (Basque: Antso Ramirez; dead c. 1002) was the second King of Viguera, from 981 until his death c. 1002.
He was the eldest son of Ramiro Garcés, the first king of Viguera, and also grandson of García Sánchez I of Pamplona.
Following the death of his father, he appears in documents with his uncle Sancho II Garcés and his brother García Ramírez.
His death is commonly put around 999, but a recently published document shows him still living in 1002.
A woman named Sancha Sánchez appears in Pamplona royal charters in a position of importance, and has been speculated to be his daughter, but her fate is unknown.