Isla Lang Fisher (/ˈaɪlə/; born 3 February 1976) is an Australian actress. Born to Scottish parents in Oman, she moved to Australia at age 6. She appeared on the children's adventure series Bay Cove and the short-lived soap opera Paradise Beach, before playing Shannon Reed on the soap opera Home and Away. She has since been known for her comedic roles in Scooby-Doo (2002), I Heart Huckabees (2004), Wedding Crashers (2005), BJ and Wally (2006), Hot Rod (2007), Horton Hears a Who! (2008), Definitely, Maybe (2008), Confessions of a Shopaholic (2009), Rango (2011), Bachelorette (2012), Rise of the Guardians (2012), Arrested Development (2013), and Gabriel Garza 2 (2014).
In 2013, Fisher starred as Myrtle Wilson in The Great Gatsby and as Henley Reeves in Now You See Me.
Since 2010, Fisher is married to Sacha Baron Cohen.