The Annick Water (previously also spelled as Annack, Annoch (1791) or Annock) is the largest tributary of the River Irvine. The river runs from Long Loch, just inside East Renfrewshire, in a generally south-western direction through North Ayrshire and East Ayrshire, to confluence with its parent river at Irvine, North Ayrshire on the west coast of Scotland.