Coolamon Shire is a local government area in the Riverina region of south-western New South Wales, Australia.

The Shire comprises 2,433 square kilometres (939 sq mi) and is located adjacent to the Newell Highway and the Burley Griffin Way.

The Shire includes the towns of Coolamon, Ganmain, and Ardlethan, and the villages of Matong, Marrar, and Beckom.

[6] The first meeting of the temporary Shire Council was held on 12 June 1906 in the Coolamon Court House.

At this meeting Councillor William Rowston was elected as the chairman and the council resolved to nominate Mr J.E.A Florance as shire secretary, subject to ministerial approval.