| Honorific-Prefix: | The Most Reverend |
| Diego Vázquez de Mercado | |
| Archbishop of Manila | |
| Church: | Catholic Church |
| Diocese: | Roman Catholic Archdiocese of Manila |
| Predecessor: | Miguel de Benavides |
| Successor: | Miguel García Serrano |
| Consecration: | June 13, 1604 |
| Consecrated By: | García de Santa María Mendoza y Zúñiga |
| Birth Date: | 1533 |
| Birth Place: | Alcaraz, Spain |
| Death Date: | June 12, 1616 |
| Death Place: | Manila, Philippines |
| Previous Post: | Bishop of Yucatán (1603–1604) |
| Nationality: | Spanish |
Diego Vázquez de Mercado (1533 - June 12, 1616) was a Roman Catholic prelate who served as the Archbishop of the Roman Catholic Archdiocese of Manila (1608–1616) and the Bishop of the Diocese of Yucatán (1604–1608).[1] [2]
Diego Vázquez de Mercado was born in Alcaraz, Spain. At some point in time, he had tried to request admission into the Society of Jesus as a priest and as the dean of the cathedral chapter of Manila.[3] On November 5, 1603, Pope Clement VIII appointed him Bishop of Yucatán, Mexico. He was consecrated bishop on June 13, 1604, by García de Santa María Mendoza y Zúñiga, Archbishop of México. May 28, 1608, Pope Paul V appointed him Archbishop of Manila.
While Archbishop, he was the principal consecrator of Pedro de Arce, Bishop of Cebu (1613), and principal co-consecrator of Alonso de Peralta, Archbishop of La Plata o Charcas (1609).