Brentwood is a locality on the Yorke Peninsula in South Australia. The town is located in the Yorke Peninsula Council local government area, west of the state capital, Adelaide by road ( as the crow flies). It is on the Yorke Highway, between Minlaton and Hardwicke Bay.
The small town is not driven by business, and functions as a residential area for people who work in nearby towns or on local farms, as well as for retirees.