Austin Theriault is an American former professional stock car racing driver and politician. He recently served in the Maine House of Representatives for the 1st district from 2022 to 2024. In 2024, he was the Republican nominee for U.S. Representative for Maine's 2nd congressional district, where he was narrowly defeated by incumbent Democrat Jared Golden.
As a professional driver, Theriault won the ARCA Racing Series championship in 2017 while driving for Ken Schrader Racing.