Haley Baylee Kalil (née O'Brien; born August 6, 1992) is an American model. In 2018, Kalil was featured in the Sports Illustrated Swimsuit Issue as a contestant in the first ever Sports Illustrated Swim Search. As one of the two winners of the competition, alongside Camille Kostek, she officially appeared in the 2019 edition as a rookie. Haley married former NFL lineman Matt Kalil in 2015, before filing for divorce in 2022.