The Roman Catholic Diocese of Tarlac (Latin: Dioecesis Tarlacensis) is a diocese of the Roman Catholic Church comprising the whole civil province of Tarlac (except Camp Servillano Aquino in San Miguel, Tarlac City, which belongs to the Military Ordinariate) in the Philippines. The see is the Saint Sebastian Cathedral in Tarlac City.

On February 16, 1963, the Diocese of Tarlac was created from territories from both the Diocese of San Fernando and the Archdiocese of Lingayen-Dagupan. It is part of the Ecclesiastical Province of San Fernando, Pampanga.

Enrique V. Macaraeg was the most recent Bishop of Tarlac, appointed on March 31, 2016. He was ordained on May 24, 2016, and installed on May 31, 2016. On October 23, 2023, Macaraeg died due to cardiac arrest.

Bishop		Period in Office	Coat of Arms
1.	Jesus J. Sison	March 8, 1963 - January 21, 1988 (Resigned)
2.	Florentino F. Cinense	January 21, 1988 - March 31, 2016 (Retired)
3.	Enrique V. Macaraeg	May 31, 2016 - October 23, 2023 (Died in office)

• Roman Catholicism in the Philippines
• List of Catholic dioceses in the Philippines

• Media related to Roman Catholic Diocese of Tarlac at Wikimedia Commons