Isla Lang Fisher (, born 3 February 1976) is an Australian actress and author. She began her career on Australian television. Born to Scottish parents in Oman, she moved to Australia at age six. After appearing in television commercials at a young age, she came to prominence for her portrayal of Shannon Reed on the soap opera Home and Away from 1994 to 1997, for which she received two Logie Award nominations. She made a successful transition to Hollywood in the live-action film adaptation of Scooby-Doo (2002), and has since appeared in Wedding Crashers (2005), Hot Rod (2007), Confessions of a Shopaholic (2009), The Great Gatsby (2013), and Now You See Me (2013). Her other notable film credits include I Heart Huckabees (2004), The Lookout (2007), Definitely, Maybe (2008), Burke & Hare (2010), Bachelorette (2012), Visions (2015), Grimsby, Nocturnal Animals, Keeping Up with the Joneses (all 2016), and Tag (2018). She has also voiced characters in animated films such as Horton Hears a Who! (2008), Rango (2011), andRise of the Guardians (2012). On television, she had a recurring role on the fourth and fifth seasons of Arrested Development (2013, 2018). Fisher has authored two young adult novels and the Marge in Charge book series.