Bill Istvan Günther Skarsgård (Swedish: [ˈbɪlːˈskɑ̌ːʂɡoːɖ]; born 9 August 1990) is a Swedish actor. He is known for portraying Pennywise in the horror films It (2017) and It Chapter Two (2019), along with the 2025 prequel series It: Welcome to Derry. Other horror appearances were in the series Hemlock Grove (2013–2015) and Castle Rock (2018–2019) and the films Barbarian (2022) and Nosferatu (2024).

Skarsgård has also appeared in the comedy Simple Simon (2010), the drama Nine Days (2020), and the action films The Divergent Series: Allegiant (2016), Atomic Blonde (2017), and John Wick: Chapter 4 (2023).

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