| Diego Ronquillo | |
| Governor: | (Viceroy of New Spain) Lorenzo Suárez de Mendoza, 5th Count of Coruña Luis de Villanueva y Zapata |
| Term Start: | March 10, 1583 |
| Term End: | May 16, 1584 |
| Order: | 5th Governor and Captain-General of the Philippines |
| Predecessor: | Gonzalo Ronquillo de Peñalosa |
| Successor: | Santiago de Vera |
| Signature: | Diego Ronquillo's signature.svg |
Diego Ronquillo was the fifth Spanish governor of the Philippines, from March 10, 1583, until May 1584. He was the brother (or nephew) of his predecessor, Gonzalo Ronquillo de Peñalosa, and served as interim governor for little more than a year. Manila suffered heavy damage from a fire that occurred on March 19, 1583.