Pedro Ruiz de Azagra (died 1186) was a Navarrese nobleman and soldier who established the independent Lordship of Albarracín, which lasted until 1284. He was the second son of . His elder brother was Gonzalo Ruiz and his younger brother, later successor, was . A certain "Peire Rois" mentioned in the poem Quan vei pels vergiers despleiar, a sirventes by Bertran de Born, is probably Pedro. Composed probably in 1184, the song is Bertran's second anti-Aragonese screed.