The Bernam River (Malay: Sungai Bernam, Jawi: سوڠاي برنم) is a river located between the Malaysian states of Perak and Selangor, demarcating the border of the two states. The river also separates the respective districts of Muallim and Bagan Datuk on the north and Hulu Selangor and Sabak Bernam in the south.