Julián de Cortázar y Carrillo (15 January 1576 – 31 October 1630) was a Spanish-born prelate of the Catholic Church in the part of New Spain that is now Colombia.

[3] Cortázar arrived on 28 September 1617 in Santiago del Estero, the seat of the diocese, where he found the cathedral destroyed by fire and only half rebuilt.

[3] In March 1620, back in Santiago de Estero, Cortázar was the principal consecrator of Pedro Carranza Salinas, the first bishop of Buenos Aires.

[3] During a visit to Calchaquí Valleys, the presence of an armed escort with Cortázar alarmed indigenous people, causing them to flee and refuse to meet with him.

[3] On 9 January 1625, King Philip IV of Spain presented Cortázar to be Archbishop of Santafé in Nueva Granada (now the Archdiocese of Bogotá),[2] and Pope Urban VIII appointed him on 7 April of that year.