Helen Louise Maroulis (; born September 19, 1991) is an American freestyle wrestler who competes in the women's 55-kg 53-kg and 57-kg categories. She was a gold medalist at the 2015 World Wrestling Championships in Las Vegas, Nevada and a gold medalist at the 2011 Pan American Games in Guadalajara, Mexico. At the 2016 Summer Olympics in Rio de Janeiro, Brazil she became the first-ever American to win a gold medal in women's freestyle wrestling at the Olympic Games.