| Ballinaclash | |
| Native Name: | Irish: An Chlais |
| Native Name Lang: | ga |
| Settlement Type: | Village |
| Pushpin Map: | Ireland |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Ireland |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Leinster |
| Subdivision Type3: | County |
| Subdivision Name3: | County Wicklow |
| Unit Pref: | Metric |
| Population As Of: | 2016 |
| Population Footnotes: | [1] |
| Population Total: | 311 |
| Population Density Km2: | auto |
| Utc Offset1: | +0 |
| Timezone1 Dst: | IST (WEST) |
| Utc Offset1 Dst: | -1 |
| Coordinates: | 52.9°N -6.2667°W |
| Elevation M: | 60 |
| Blank Name: | Irish Grid Reference |
Ballinaclash ([2]) is a village in east County Wicklow centred on a bridge that carries the R753 regional road across the River Avonbeg.
The village is mentioned in J.M. Synge's play 'The Tinker's Wedding': "And a big fool I was too, maybe; but we'll be seeing Jaunting Jim to-morrow in Ballinaclash, and he after getting a great price for his white foal in the horse-fair of Wicklow"
In 1837, the village had a population of 3855 according to Samuel Lewis' 'A Topographical Dictionary of Ireland'. This population was much reduced by the famine and subsequent emigration and today is only a fraction of that number.The village was originally the site of an ancient monastery founded by the brother of St. Kevin, according to Mervyn Archdall. The site is now occupied by Whaley Abbey; the home of the notorious Buck Whaley.