The Louisiana State Treasurer special election took place on October 14, 2017, to elect the state treasurer of Louisiana, with a runoff election to be held on November 18, 2017, if necessary. Republican State Treasurer John Kennedy resigned after he was elected to the U.S. Senate in 2016. First Assistant Treasurer Ron Henson replaced Kennedy as treasurer, and served until the special election. Henson did not run in the special election.