Denmark River
 The Denmark River is located in the Great Southern region of Western Australia. The river rises near Pardelup and meanders in a southerly direction until it flows through Denmark into Wilson Inlet (along with the Hay River).The river was named in December 1829 by naval ship's surgeon Thomas Braidwood Wilson after his mentor naval surgeon Alexander Denmark Physician of the Fleet Resident Physician at the Royal Hospital Haslar and past-Physician to the Mediterranean Fleet.