Hester Brook is a rural locality of the Shire of Bridgetown–Greenbushes in the South West region of Western Australia.

Hester Brook is located on the South Western Highway, which passes through its north-eastern part.

[4][5] The heritage-listed Peninsula House, a homestead dating back to 1920, is located in Hester Brook, overlooking a bend in the Blackwood River.

[6] A second heritage-listed building, Parkville, also overlooking a bend in the river, dates back to 1900.

An older dwelling at the site, built a decade earlier, is now used as a tool shed.