Donald William Ewen (January 25, 1922 – March 31, 2005) was a politician in Ontario, Canada.
Ewen served as a public school board trustee in Ancaster, Ontario.
[2] He served as a backbench supporter of the John Robarts government.
In 1967 he was defeated by New Democrat challenger Ian Deans by about 2,000 votes.
[4] He was defeated in the 1975 general election and retired from political life.