Sean Robert Jamieson (born March 2, 1989) is a Canadian former professional baseball infielder. Jamieson attended in Simcoe, Ontario, and Canisius College. The Oakland Athletics selected Jamieson in the 17th round of the 2011 MLB draft. The Athletics traded him to the Diamondbacks for Stephen Drew in August 2012. He played for the Canadian national baseball team in the 2015 Pan American Games and 2015 WBSC Premier12.