Sinop Ulu Cami
Alaaddin Camii olarak da bilinir.
- Tür: Cami
- Tema: Ulu Camiler
- Kültür: Candaroğlu, Selçuklu
- Yüzyıl: 13. yy
- Bölge: Türkiye, Karadeniz Bölgesi, Sinop, Merkez (Sinop)
| Alaaddin Mosque (Sinop Ulucami) | |
|---|---|
 | |
| Religion | |
| Affiliation | Islam |
| Province | Sinop Province |
| Region | Black Sea Region |
| Rite | Sunni Islam |
| Status | Active |
| Location | |
| Location | Sinop, Turkey |
| Geographic coordinates | 42°01′35″N 35°08′54″E / 42.02639°N 35.14833°E |
| Architecture | |
| Type | Mosque |
| Completed | 1220s (original) 1267 (rebuilt) |
| Specifications | |
| Width (nave) | 66 meters |
| Dome(s) | 3 (main) +2 (smaller) |
| Minaret(s) | 1 |
Alaaddin Mosque (Turkish: Alâeddin Camii) is a historical mosque in Sinop City, Sinop Province, Turkey.