Benjamin Tyler Cook (born December 11, 1997) is an American actor, singer and dancer, known for his work across stage and screen. Cook has appeared on the Broadway stage in Ragtime, Billy Elliot the Musical (for which he was nominated for a Helen Hayes Award), Tuck Everlasting, Mean Girls, West Side Story, and Illinoise. He has also performed in two Broadway national tours, Billy Elliot the Musical and Newsies the Musical, and appeared on television in episodes of 30 Rock, House of Cards, Veep, Law & Order: Special Victims Unit, and in the HBO film Paterno. He most recently appeared as a Jet in the 2021 film version of West Side Story and as Henry in the HBO Max horror series Pretty Little Liars (2022–2024), a reboot of the original 2010s series.