Knocklyon
| Knocklyon Cnoc Lín | |
|---|---|
| Suburb | |
| Knocklyon parish church | |
| Coordinates: 53°17′08″N 6°19′14″W / 53.2856°N 6.3205°W | |
| Country | Ireland | 
| Province | Leinster | 
| Region | Eastern and Midland Region | 
| County | South Dublin | 
| Government | |
| • Dáil constituency | Dublin South-West | 
| • EU Parliament | Dublin | 
| • Local electoral area | Firhouse—Bohernabreena | 
| Elevation | 69 m (226 ft) | 
| Time zone | UTC+0 (WET) | 
| • Summer (DST) | UTC-1 (IST (WEST)) | 
Knocklyon (Irish: Cnoc Lín) is a suburb of the city of Dublin, located in South Dublin, Ireland. Unlike many Dublin suburbs, Knocklyon was not developed around a village; rather it largely consists of modern housing, with a number of old cottages and farmhouses along Knocklyon Road attesting to the area's rural past.