Viateur Éthier (June 27, 1915 – July 19, 1976) was a businessman and political figure in Ontario, Canada. He represented Glengarry—Prescott in the House of Commons of Canada as a Liberal member from 1962 to 1972. He was born in Sainte-Justine-de-Newton, Quebec in 1915, the son of Albert Éthier, and studied there and at Dalkeith, Ontario. He married Marcelle Touchette in 1948. Éthier owned a bakery in Dalkeith. His brother Denis was elected to the House of Commons for the same seat in 1972 and represented the riding until 1984.