Barrhead-Morinville-Westlock was a provincial electoral district in Alberta, Canada, mandated to return a single member to the Legislative Assembly of Alberta using the first-past-the-post method of voting from 2004 to 2019. The Barrhead-Morinville-Westlock electoral district included the towns of Barrhead, Morinville, Westlock, Swan Hills, and Legal as well as numerous smaller hamlets.