Cromwell Parish is a rural locality of the Snowy Mountains and a civil parish of Buccleuch County, New South Wales, Australia.Robert McLean, The New atlas of Australia : the complete work containing over one hundred maps and full descriptive geography of New South Wales, Victoria, Queensland, South Australia and Western Australia, together with numerous illustrations and copious indices (Sydney :J. Sands, [1886) Map 11.

The parish located between Wee Jasper, New South Wales and the populated part of Brindabella, New South Wales west of the Australian Capital Territory is partly in the Brindabella National Park. County of Cowley and Co. Buccleuch New South Wales, 1871 map, County of Cowley and Co. Buccleuch New South Wales, 1871 map. Cromwell Parish is Snowy Valleys Council Area. It is now contained in the area of the locality of Brindabella.

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