Ballybay
| Ballybay Béal Átha Beithe | |
|---|---|
| Town | |
| Main Street | |
| Motto(s): Bheith i Lár Báire "be at the centre" | |
| Coordinates: 54°07′46″N 6°54′11″W / 54.129341°N 6.902922°W | |
| Country | Ireland | 
| Province | Ulster | 
| County | County Monaghan | 
| Elevation | 61 m (200 ft) | 
| Population  (2022) | 1,329 | 
| Time zone | UTC±0 (WET) | 
| • Summer (DST) | UTC+1 (IST) | 
| Eircode routing key | A75 | 
| Telephone area code | +353(0)42 | 
| Irish Grid Reference | H743188 | 
Ballybay (Irish: Béal Átha Beithe, meaning 'mouth of the ford of the birch') is a town and civil parish in County Monaghan, Ireland. The town is centred on the crossroads of the R183 and R162 roads.