Bill Istvan Günther Skarsgård (Swedish pronunciation: born 9 August 1990) is a Swedish actor. He is best known for portraying Pennywise in the horror films It (2017) and It Chapter Two (2019), based on Stephen King's novel of the same name. Other horror appearances were in the film Barbarian (2022) and the series Hemlock Grove (2013–2015) and Castle Rock (2018–2019).
Skarsgård has also appeared in the comedy Simple Simon (2010), the thrillers The Divergent Series: Allegiant (2016) and Atomic Blonde (2017), the drama Nine Days (2020), and the action sequel John Wick: Chapter 4 (2023).