Longbar is a hamlet in North Ayrshire, Scotland, immediately to the east of Glengarnock. Longbar is now a housing estate situated on the low hillside above the Longbar Farm. Originally it was a string of single-storey terraced cottages that ran from the farm east towards the junction of the Auchengree Road with the B777 road. Both versions of the hamlet h…Longbar is a hamlet in North Ayrshire, Scotland, immediately to the east of Glengarnock. Longbar is now a housing estate situated on the low hillside above the Longbar Farm. Originally it was a string of single-storey terraced cottages that ran from the farm east towards the junction of the Auchengree Road with the B777 road. Both versions of the hamlet have provided housing for workers in the local heavy industries, primarily the Glengarnock Steel Works.