Sancha Ramírez (born c. 1045, died 1097)[1] was an Aragonese princess, the daughter of King Ramiro I and Queen Ermesinda.
During her brother's reign she played an important role in consolidating the Kingdom of Aragon, which had been founded by her father in 1035.
As a twenty-year-old widow, Sancha remained for a while in Urgell, appearing in acts beside her stepson Count Ermengol IV.
Her other sister, Theresa, later also entered the monastery, probably on her brother Sancho's orders because no suitable husband could be found for her.
The elder Sancha had received the estate at Aibar with the monastery from Queen Jimena Fernández, the grandmother of Ramiro.
In 1079, she made a similar exchange of properties with San Juan de la Peña, this time accompanied by the abbess of Santa Cruz, Mindonia.
[2] Sancha was present on 4 December 1094 when the church of San Juan de la Peña was consecrated and the body of her brother Sancho was interred.