Petronilla (29 June 1136– 15 October 117, whose name is also spelled Petronila or Petronella (Aragonese Peyronela or Payronella and Catalan: Peronella), is the Queen of Aragon from the abdication of her father in 1137 until her own abdication in 1164.
She is the daughter and successor of Ramiro II by his queen, Agnes of Aquitaine.
She is the last ruling member of the Jiménez dynasty in Aragon, and by marriage brings the throne to the House of Barcelona.