Acadia Valley is a hamlet in southeast Alberta, Canada within the Municipal District of Acadia No. 34. The MD of Acadia No. 34's municipal office is located in Acadia Valley. Acadia Valley is located along Highway 41 commonly referred to as Buffalo Trail between Oyen and Medicine Hat and sits about 14.5 km west of the Alberta-Saskatchewan border. Acadia Valley sits at an elevation of 716 m. The hamlet is located within census division No. 4. It was named in 1910 by settlers from Nova Scotia.