Stratford-on-Slaney, also known as Stratford or Stratford-upon-Slaney, is a small village on the River Slaney in west County Wicklow in Ireland. It was built by the Earl of Aldborough from 1774. According to the census, the village had a population of 241.

The River Slaney is a large river in the southeast of Ireland. It rises on Lugnaquilla Mountain in the western Wicklow Mountains and flows west and then south through counties Wicklow, Carlow and Wexford for 117.5 km (73 mi), before entering St George's Channel in the Irish Sea at Wexford town. The estuary of the Slaney is wide and shallow and is known as Wexford Harbour. The catchment area of the River Slaney is 1,762 km2. The long term average flow rate of the River Slaney is 37.4m3/s