Graham Harrell (born May 22, 1985 in Brownwood, Texas) is a professional American and Canadian football quarterback for the Saskatchewan Roughriders of the Canadian Football League. He was signed by the Roughriders as a street free agent in 2009. He played college football at Texas Tech.

Harrell played at Ennis High School in Ennis, Texas, where he was coached by his father Sam Harrell. He started at quarterback for three seasons and led the Fighting Lions to a state Class 4A title as a sophomore. He also played in the 2004 Oil Bowl, receiving the offensive MVP award.

By the time he graduated, Harrell set Texas high school records in the following categories: