Jonathan Wilton Lines (born May 1970) is an American businessman and former chairman of the Arizona Republican Party. Lines is the general manager of Lines & Lundgreen Roofing and Insulation Inc.
Lines has 11 children. He is a member of the Church of Jesus Christ of Latter-day Saints.
Lines took over the party after 2016, a difficult presidential election year. While Donald Trump won the Arizona presidential primary-preference election, the state elected almost all Ted Cruz-supporting delegates to the convention. Chairman Lines was then faced with the challenge of uniting the party before the mid-term elections.
In 2019, Lines lost re-election to former state Senator Kelli Ward.