Thomson Brook is a rural locality of the Shire of Donnybrook–Balingup in the South West region of Western Australia.

[2][3] Thomson Brook and the Shire of Donnybrook–Balingup are located on the traditional land of the Wardandi people of the Noongar nation.

[4][5][6] The locality is home to three heritage listed sites: St Thomas' Anglican church, the Woodperry homestead, and a group of nine eucalyptus marri.

[7][8] St Thomas' Anglican church was privately built for the Thompson family in 1908, a rarity in Western Australia, and consecrated by the Anglican Bishop of Bunbury the following year, on 17 March 1909.

[11] Woodperry is a mud brick house, a rarity in the district, dating back to 1901.