| Jurisdiction: | Diocese |
| Tehuacán | |
| Latin: | Dioecesis Tehuacaniensis |
| Local: | Diócesis de Tehuacán |
| Country: | Mexico |
| Province: | Puebla de los Ángeles |
| Area Sqmi: | 2,431 |
| Population: | 1,017,000 |
| Population As Of: | 2010 |
| Catholics: | 962,000 |
| Catholics Percent: | 94.6 |
| Parishes: | 57 |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 13 January 1962 (years ago) |
| Cathedral: | Cathedral of the Immaculate Conception of Mary |
| Bishop: | Gonzalo Alonso Calzada Guerrero |
| Metro Archbishop: | Victor Sánchez Espinosa |
The Diocese of Tehuacán (la|Dioecesis Tehuacaniensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Mexico. It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Puebla de los Angeles. The Diocese of Tehuacán was erected on 13 January 1962. Its cathedra is found within the Cathedral of the Immaculate Conception of Mary in the episcopal see of Tehuacán, Puebla.