Sarah Ruth Snook (born December 1, 1987) is an Australian actress. She is known for her starring role as Shiv Roy in the television series Succession (2018–2023), for which she earned critical acclaim in international media. She has won several awards including a Primetime Emmy Award, two Golden Globe Awards, two Critics' Choice Television Awards and a Screen Actors Guild Award.

Among other films, Snook has appeared in Not Suitable for Children (2012), These Final Hours (2013), Predestination (2014), The Dressmaker (2015), Steve Jobs (2015), The Glass Castle (2017), and Pieces of a Woman (2020). She won two AACTA Awards for her leading roles in Sisters of War (2010) and Predestination (2014).