Last name Pirja (Pirja 
) , throughout the world, is a rare cognomen. The cognomen Pirja is characteristic of Albania, where it is quite a rare surname, Greece, where it is a rare surname, and Romania. Much less frequently, Pirja is the forename as well as the last name.
Avni, Serxho, Albion, Andrei, Barjam, Bojana, Bledar, Kujtim, Klaudi, Redjan, Daniel, Dorian, Ledion, Lefter, Edison, Edlira, Orgest, Xhulio, Manjola, Anxhela, Ramadan, Daniela, Saimir, Marius, Qemal, Yzeir, Cata, Luce, Hava, Ilir, Igli, Maria, Shege, Sofie, Aldri, Altin, Danjela, Anila, Ardit, Besim, Behar, Klodi, David, Gezim, Elsid, Ervin, Flora, Orgit, Artan, and Dumitru