Benjamín Castillo Plascencia

José Benjamín Castillo Plascencia (9 September 1945 – 13 April 2026) was a Mexican Roman Catholic prelate who served as the Bishop of the Diocese of Celaya from 2010 to 2021. He previously served as the Bishop of Tabasco (2003–2010) and as an auxiliary bishop of the Archdiocese of Guadalajara and titular bishop of Sufasar (1999–2003).

Early life and education José Benjamín Castillo Plascencia was born in Ixtlahuacán del Río, Jalisco, on 9 September 1945. He pursued his ecclesiastical studies at the Seminary of Guadalajara and was ordained a priest for the Archdiocese of Guadalajara on 14 April 1974 by Cardinal José Salazar López. He was later sent to Spain to study catechetical theology, where he earned a bachelor's degree from the Comillas Pontifical University and a Licentiate from the University of Salamanca.

On 29 April 2010, Pope Benedict XVI transferred him to the Diocese of Celaya. In January 2020, he celebrated his 20th anniversary as a bishop.

On 12 June 2021, Pope Francis accepted Castillo Plascencia's resignation from the pastoral governance of the Diocese of Celaya upon reaching the age limit of 75.

Death Castillo Plascencia died in Celaya, Guanajuato, on 13 April 2026, at the age of 80.