| Jurisdiction: | Diocese |
| Teotihuacan | |
| Latin: | Dioecesis Teotihuacana |
| Local: | Diócesis de Teotihuacan |
| Country: | Mexico |
| Metropolitan: | Tlalnepantla |
| Province: | Province of Tlalnepantla |
| Area Sqmi: | 477 |
| Population: | 866,282 |
| Population As Of: | 2010 |
| Catholics: | 779,000 |
| Catholics Percent: | 89.9 |
| Parishes: | 25 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 3 December 2008 (years ago) |
| Cathedral: | Cathedral of St. John the Baptist and the Holy Redeemer |
| Bishop: | Guillermo Francisco Escobar Galicia |
| Map: | Roman Catholic Diocese of Teotihuacan in Mexico.jpg |
| Website: | www.diocesisdeteotihuacan.org |
The Roman Catholic Diocese of Teotihuacan (Latin: Dioecesis Teotihuacana) (erected 3 December 2008) is a suffragan diocese of the Archdiocese of Tlalnepantla.