Sadie Elizabeth Sinkย (born April 16, 2002) is an American actress. She began her acting career in theatre, playing the title role in the musicalย Annieย (2012โ14) and youngย Elizabeth IIย in the historical playย The Audienceย (2015) onย Broadway. In 2016, she made her film debut in the biographical sports dramaย Chuck.
Sink had her breakthrough portrayingย Max Mayfieldย in theย Netflixย science fiction seriesย Stranger Thingsย (2017โ2025) and received critical acclaim for her performance inย its fourth season. In 2021, she appeared in the horror film trilogyย Fear Streetย and played the lead role inย Taylor Swift's short filmย All Too Well. She then starred inย Darren Aronofsky's psychological dramaย The Whaleย (2022), for which she received aย Critics' Choice Movie Awardย nomination. Sink returned to Broadway in 2025, starring in the playย John Proctor Is the Villainย and earning a nomination forย a Tony Award for Best Actress in a Play; the second youngest woman to achieve such.