Juan de Lanuza y Garabito (died 1498) was a Spanish noble from the 15th century.
Juan's mother was Inés de Garabito y Lanuza, his brothers were Martin, Sieur of Plasencia and Bardallur and Ferrer, Sieur of Azaila and Cosculluela.
His sister was Dianira, who married Pedro de Luna, Sieur of Illueca.
Juan was the Sieur of Escuer, Arguisal and Essun de Basa.
His eldest son was Juan de Lanuza y Pimentel (died in Naples, Italy, 1507), Viceroy of Sicily.