Duranillin is a small town located in the Wheatbelt region of Western Australia, 24 kilometres (15 mi) south of Darkan near the junction of the Arthur and Beaufort rivers.

The town's name is of Aboriginal origin and was first recorded by a surveyor in 1877, as with Moodiarrup further south, but the meaning of the name is not known.

The town was established in 1916 when the Wagin to Bowelling railway line was built,[2] and gazetted in 1918.

It serves as a trading post and meeting place for the farming families and agricultural community in the broader area, and periodically stages local events which attract visitors.

It is a semi-freshwater lake covering 256 hectares (633 acres), and a popular swimming spot with picnic areas and clean sandy beaches, offering water skiing and swimming as well as serving as a sanctuary for aquatic bird life.