Petronilla (29 June/11 August 1136 – 15 October 1173), whose name is also spelled Petronila or Petronella (Aragonese Peyronela or Payronella, and ), was the Queen of Aragon from the abdication of her father in 1137 until her own abdication in 1164. She was the daughter and successor of Ramiro II by his queen, Agnes. She was the last ruling member of the Jiménez dynasty in Aragon, and by marriage brought the throne to the House of Barcelona.