Buchin is a commune located in the Caraș-Severin County of western Romania. Situated within the historical region of Banat, the commune has a recorded population of 1,594 as of 2021.
The administrative area of Buchin is composed of five distinct villages: Buchin, Lindenfeld, Poiana (Sebesmező), Prisian (Perestyén), and Valea Timișului (Körpa).