Toni Collette (born Collett; 1 November 1972) is an Australian actress. Known for her work in television and independent films, she has received various accolades, including a Golden Globe Award, a Primetime Emmy Award, and five AACTA Awards, with nominations for an Academy Award and a Tony Award.

Collette made her film debut in the 1992 film Spotswood. Her breakthrough role came in the comedy drama Muriel's Wedding (1994), which earned her a Golden Globe Award nomination and won her the AACTA Award for Best Actress in a Leading Role. Collette received further praise for her role in the thriller The Sixth Sense (1999), for which she received a nomination for the Academy Award for Best Supporting Actress. She received BAFTA Award nominations for her performances in the romantic comedy About a Boy (2002) and the comedy drama Little Miss Sunshine (2006). Collette's other films include Emma (1996), Velvet Goldmine (1998), The Hours (2002), Japanese Story (2003), In Her Shoes (2005), Fright Night (2011), The Way, Way Back (2013), Krampus (2015), Hereditary (2018), Knives Out (2019), I'm Thinking of Ending Things (2020), and Nightmare Alley (2021).