| Building Name: | Jameh Mosque of Zanjan |
| Location: | Zanjān, Iran |
| Map Type: | Iran |
| Map Relief: | 1 |
| Coordinates: | 36.6681°N 48.4822°W |
| Religious Affiliation: | Shia Islam |
| Province: | Zanjān Province |
| Municipality: | Zanjān County |
| Architecture Type: | Mosque |
| Specifications: | no |
| Year Completed: | 19th century |
The Jāmeh Mosque of Zanjān (Persian: مسجد جامع زنجان|translit=Masjid-e-Jāmeh Zanjān) also known as, Seyyed Mosque (Persian: مسجد سید |translit=Masjid-e-Seyyed) and Sultani Mosque, is the grand, congregational mosque (Jāmeh) of Zanjān city, Iran.[1] The mosque is situated in the old part of the city and was constructed in 1826 during the Qajar era.[2]
The mosque and school was built in the 17th century AH (1242) during the Qajar dynasty, it was initially named the Seyyed Mosque. The construction was carried out by Abdollah Mirza who was one of the children of Fat'h 'Alī Shāh Qājār. It is located near the Zanjan bazaar.[3]