Clashmore (Irish: Clais Mhór) is a village, townland and civil parish in west County Waterford, Ireland.

[2] The village and surrounding district are very low-lying, as the name Clais Mhór (meaning "the great hollow or trench") implies; elsewhere the land is rather hilly.

It is the site of a distillery built by Lord Hastings the thirteenth Earl of Huntingdon which operated from c. 1835 to 1840, producing 20,000 gallons of whiskey annually.

The distillery chimney is unique in Ireland as the only one which spans the river which propelled the mill.

Clashmore House was a mansion built but never completed on the site that is currently occupied by St Mochua's well.