Polnessan (Scottish Gaelic: Poll an Easain, pool on the small waterfall) is a small rural village in East Ayrshire, Scotland. Polnessan has a population of 87, and is located a mile north of Patna on the A713 road. Polnessan has no facilities, and is effectively a long row of council housing. The houses were originally built by Ayr County Council for miners and their families on the Houldsworth pit, a nearby coal mine first sunk by Dalmellington Iron Company in 1900.