The Canonsburg Armory is a former Pennsylvania National Guard armory in Canonsburg, Pennsylvania. It was listed on the National Register of Historic Places on December 22, 1989.
It is designated as a historic public landmark by the Washington County History & Landmarks Foundation.
The armory was built in 1938 at a cost of $85,548, funded by the Public Works Administration.
In 2010, the armory was sold to the Borough of Canonsburg for $268,000.