The Weyburn Security Bank was a chartered bank headquartered in Weyburn, Saskatchewan, Canada. The bank was established by a group of American investors as a private bank in 1910, by 1911 the bank had advanced to the point where it obtained a Canadian bank charter. Over its 30 years of operation the bank expanded to having assets of $6 million and serving 33 communities. Due to the onset of the great depression, in May 1931 the bank was purchased by the Imperial Bank of Canada.