Watergrasshill is a village located in north-east County Cork, Ireland. Situated to the north of Cork City, it falls within the Cork North-Central Dáil constituency.
The village is positioned on the R639 road and can be accessed via junction 17 of the M8 motorway. It was bypassed in 2003. According to the 2022 census, Watergrasshill had a population of 1,840 residents.