Teresa Mary Palmer (born 26 February 1986) is an Australian actress and model. Following her film debut in Wolf Creek (2005), Palmer had supporting roles in films such as The Grudge 2 (2006), Bedtime Stories (2008), The Sorcerer's Apprentice (2010), I Am Number Four, Take Me Home Tonight (both 2011), Knight of Cups (2015), Triple 9 (2016), and The Fall Guy (2024).
Her performance as a depressed teenager in the psychological drama film 2:37 (2006) was critically praised, for which she was nominated for the AACTA Award for Best Actress in a Leading Role. For her portrayal of Dorothy Schutte in the epic biographical war film Hacksaw Ridge (2016), she received her second AACTA nomination and was also nominated for the AACTA International Award for Best Supporting Actress. Palmer would later gain nominations in the former category for Berlin Syndrome (2017) and Ride Like a Girl (2019). Further recognition came for her starring roles in the horror films Warm Bodies (2013), Lights Out (2016), and The Twin (2022), establishing Palmer as a scream queen.
Expanding her ventures, Palmer co-wrote, co-produced, and starred in the drama film The Ever After (2014), which was directed by her husband, Mark Webber. She is also known for her leading roles as Diana Bishop on the Sky One and Sky Max fantasy drama series A Discovery of Witches (2018–22) and Freya Heywood on the Disney+ psychological thriller miniseries The Clearing (2023), the latter earned her a nomination for the AACTA Award for Best Lead Actress in a Television Drama.