&sq=&lang=&file=File:Eritrea_adm_location_map.svg)  Location within Eritrea | |
| Monastery information | |
|---|---|
| Established | 4th century (but probably initially in the 3rd century) |
| Diocese | Eritrean Orthodox Tewahedo Church |
| Controlled churches | St. Mary's Church |
| People | |
| Founder(s) | Frumentius |
| Architecture | |
| Style | Aksumite |
| Site | |
| Location | Anseba Region |
| Country |  Eritrea |
| Coordinates | 15°44′56″N 38°41′59″E / 15.7487796°N 38.6996201°E |
| Public access | Yes |
Debra Sina (Tigrinya: ደብረ ሲና) is a monastery in the highlands of Eritrea near Keren in the Anseba Region.[1] It was founded in the 4th century by saint Aba Salama, making it one of the oldest churches in the world.