John Leigh "Jay" Dardenne, Jr. is an American lawyer and politician from Baton Rouge, Louisiana, who served as commissioner of administration for Democratic Governor John Bel Edwards. A Republican, Dardenne previously served as the 53rd lieutenant governor of his state from 2010 to 2016. Running as a Republican, he won a special election for lieutenant governor held in conjunction with the regular November 2, 2010 general election. At the time, Dardenne was Louisiana secretary of state. Formerly, Dardenne was a member of the Louisiana State Senate for the Baton Rouge suburbs, a position he filled from 1992 until his election as secretary of state on September 30, 2006.