| Type: | neighbourhood |
| Province: | Istanbul |
| District: | Bakırköy |
| Şenlikköy | |
| Population Total: | 29078 |
| Population As Of: | 2022 |
| Coordinates: | 40.977°N 28.796°W |
Şenlikköy is a neighbourhood (Turkish: [[mahalle]]) in the municipality and district of Bakırköy, Istanbul Province, Turkey.[1] Its population is 29,078 (2022).[2] It is located along Marmara Sea, and borders to the northeast the neighborhood of Yeşilköy, to the northwest the district of Küçükçekmece.