Honesto "Nes" Flores Ongtioco (born October 17, 1948) is a Filipino bishop of the Roman Catholic Church.

After taking renewal courses, he went to Rome in 1987 where he obtained a licentiate in Sacred Theology from the Pontifical University of Saint Thomas Aquinas.

[5] On December 8, 1972, Ongtioco was ordained to the priesthood by San Fernando Bishop Emilio Cinense y Abera at the Cathedral of Our Lady of the Assumption in Pampanga.

He served as spiritual director, professor, rector, and other positions in Mother of Good Counsel Minor Seminary, University of the Assumption, and other educational institutions.

[8] His inspiring words and assuring presence guided the Diocese of Balanga as it celebrated its 25th anniversary and as it responded to the call of the pope at the beginning of the third millennium, "Duc in Altum."

[12][13] On October 4, 2024, his resignation as bishop of Cubao was accepted by Pope Francis after he reached the mandatory retirement age of 75.