Jacob Tremblay (born October 5, 2006) is a Canadian actor. He voices Robin on Harley Quinn.
Tremblay began acting in television roles in 2013 and made his film debut in the live-action/animated feature The Smurfs 2 (2013). He starred as Jack Newsome in Room (2015), for which he won the Critics' Choice Movie Award for Best Young Performer, the Canadian Screen Award for Best Actor, and was nominated for the Screen Actors Guild Award for Outstanding Performance by a Male Actor in a Supporting Role, becoming the youngest to be nominated in that category. He also had roles as August Pullman in the drama Wonder (2017), which earned him an additional Critics Choice Award nomination, the film Good Boys (2019), Doctor Sleep (2019) and has in addition to his role on Harley Quinn done voice work for the titular protagonist in the Pixar film Luca (2021), and in the live action remake of The Little Mermaid (2023)