Toni Collette Galafassi (November 1, 1972) is an Australian actress, producer, singer, and songwriter. Known for her work in television and independent films, she has received various accolades throughout her career, including a Golden Globe Award and a Primetime Emmy Award, in addition to nominations for an Academy Award, a Tony Award, and two British Academy Film Awards.

After making her film debut in Spotswood (1992) and being nominated for the AACTA Award for Best Actress in a Supporting Role, 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 achieved greater international recognition for her role in the psychological thriller film The Sixth Sense (1999), and was nominated 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).