Geoff Tisdale (born February 21, 1985 in Pacoima, California) is a professional Canadian football defensive back for the Hamilton Tiger-Cats of the Canadian Football League. He was signed by the Hamilton Tiger-Cats as a street free agent in 2008. He played college football for the Pittsburg State Gorillas. On February 16, 2011, Tisdale was signed by the Calgary Stampeders as a free agent. On June 24, 2012, Tisdale was traded to the Hamilton Tiger-Cats for Hamilton's third-round and sixth-round draft picks in 2014.