Rufino "Jun" Coronel Sescon Jr. OP (born April 20, 1972) is a Filipino prelate of the Catholic Church and a professed member of the Dominican Order.

Ordained to the priesthood in 1998, Sescon served as the personal secretary of then-Manila Archbishop Cardinal Jaime Sin.

[2] He is also the executive director of the Catholic Mass Media Awards and a member of the Presbyteral Council of the Archdiocese of Manila.

[2] He also served as chancellor of the Archdiocese of Manila from 2008 to 2015, as well as the administrator of the Archbishop's Palace (Cardinal Sin's former residence) in Villa San Miguel, Mandaluyong.

[9] On September 28, 2020, he joined the Priestly Fraternities of St. Dominic, a society of apostolic life under the Order of Preachers.

[5][6][9] Sescon was instrumental in elevating Quiapo Church as a national shrine in a process that took five months from the start of its application in February 2023 to the approval of the Catholic Bishops' Conference of the Philippines (CBCP) in July.