| Building Name: | Old Mosque |
| Native Name: | Eski Camii |
| Map Type: | Turkey |
| Location: | Edirne, Turkey |
| Coordinates: | 41.6767°N 26.5557°W |
| Religious Affiliation: | Sunni Islam |
| Architecture: | yes |
| Architect: | Haci Alaeddin, Ömer bin Ibrahim |
| Architecture Type: | Mosque |
| Architecture Style: | Ottoman architecture |
| Groundbreaking: | 1402 |
| Minaret Quantity: | 2 |
| Dome Quantity: | 9 |
The Old Mosque (Turkish: Eski Camii), also known as Grand Mosque (Turkish: Ulucami),[1] is an early 15th-century Ottoman mosque in Edirne, Turkey.
It was built from the order of Emir Süleyman, and completed under the rule of his brother, Sultan Mehmet I. The mosque is located in the historical center of the city, near the market and close to other prominent historical mosques, Selimiye Mosque and Üç Şerefeli Mosque. The mosque is covered by 9 domes supported on four columns. The mosque had originally a single minaret, the taller one was later built by Murat II. The mosque without a courtyard is entered through three doors. Inside the mosque large calligraphy works can be seen.[1]