Kilternan
| Kilternan Cill Tiarnáin | |
|---|---|
| Village | |
| Our Lady of the Wayside 'The Blue Church' (1929) | |
| Coordinates: 53°14′08″N 6°11′36″W / 53.2356°N 6.1934°W | |
| Country | Ireland | 
| Province | Leinster | 
| County | Dún Laoghaire–Rathdown | 
| Time zone | UTC+0 (WET) | 
| • Summer (DST) | UTC–1 (IST (WEST)) | 
| Eircode routing key | D18 | 
| Telephone area code | +353(0)1 | 
Kilternan (Irish: Cill Tiarnáin, meaning 'Church of Tiarnán'), also known as Kiltiernan, is a village in Dún Laoghaire–Rathdown, in the foothills of the Wicklow Mountains south of Dublin, Ireland, near the border with County Wicklow. Kiltiernan is in a civil parish of the same name, in the barony of Rathdown.