Clarington (2011 population 84,548) is a municipality in Ontario, Canada in the Regional Municipality of Durham. It was created in 1973 with the merging of the Town of Bowmanville, and the townships of Clarke and Darlington. It took its present name in 1994 after having been known as the Town of Newcastle from 1974-93. The name change was made to alleviate long-standing confusion between the municipality as a whole and the included village of the same name.