Anna Girò (also Girrò or Giraud), also known as l'Annina del Prete Rosso, la Nina del Prete Rosso, or l'Annina della Pietà, was the stage name of Anna Maria(?) Maddalena Tessieri (or Tesieri, Teseire or Testeiré), an Italian mezzo-soprano/contralto of the 18th century. She is best remembered for her numerous collaborations with composer Antonio Vivaldi who wrote operatic roles for her. She is the singer who performed the greatest number of Vivaldi's operas, the one who kept them in her repertoire the longest time and who made them known across the largest geographical area.