Domingo de Oña

Domingo de Oña, O. de M. or Pedro de Oña (1560 – 13 October 1626) was a Roman Catholic prelate who served as Bishop of Gaeta (1605–1626), and Bishop of Coro (1601–1605).

Domingo de Oña was born in Burgos, Spain in 1560 and ordained a priest in the Order of the Blessed Virgin Mary of Mercy. On 27 August 1601, he was appointed during the papacy of Pope Clement VIII as Bishop of Coro. On 9 December 1601, he was consecrated bishop by Domenico Ginnasi, Archbishop of Manfredonia. On 27 June 1605, he was appointed during the papacy of Pope Paul V as Bishop of Gaeta.

He served as Bishop of Gaeta until his death on 13 October 1626.

While bishop, he was the principal co-consecrator of:

• Luis Fernández de Córdoba, Bishop of Salamanca (1603);
• Giovanni Falces, Archbishop of Brindisi (1605);
• Fernando Acevedo González, Bishop of Osma (1610);
• Nicola Antonio Spinelli, Bishop of Alessano (1612); and
• Juan Torres de Osorio, Bishop of Siracusa (1613).