Waterfoot or Glenariff is a small coastal village in County Antrim, Northern Ireland. It is at the foot of Glenariff, one of the Glens of Antrim, within the historic barony of Glenarm Lower and the civil parishes of Ardclinis and Layd. The village is in the townland of Warren, 16 miles north-east of Ballymena. The 2001 Census recorded a population of 504 inhabitants.