| Building Name: | Küçük Mecidiye Mosque |
| Location: | Istanbul, Turkey |
| Geo: | 41.0453°N 29.017°W |
| Religious Affiliation: | Islam |
| Architecture: | yes |
| Architect: | Nigoğos Balyan |
| Architecture Type: | mosque |
| Architecture Style: | Ottoman architecture |
| Groundbreaking: | 1843 |
| Year Completed: | 1848 |
| Minaret Quantity: | 1 |
The Küçük Mecidiye Mosque (Turkish: Küçük Mecidiye Camii) is an Ottoman mosque in the Beşiktaş district of Istanbul, Turkey. It was built from the order of Sultan Abdülmecid I by Nigoğos Balyan, member of the Balyan family. The mosque is located on the Çırağan Street near the entrance to the Yıldız Park. Beşiktaş Police Station is located nearby, Çırağan Palace is across the street.