Isla Lang Fisher (born 3 February 1976) is an actress who began her acting career on Australian television. She was born to Scottish parents in Omanand raised in Australia. She appeared on the children's adventure series Bay Cove, and the short-lived soap opera Paradise Beach, before playing Shannon Reedon 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),^[2] Hot Rod (2007), Definitely, Maybe (2008), Confessions of a Shopaholic (2009), Rango (2011), Bachelorette (2012), and the fourth season of Arrested Development (2013). In 2013, Fisher starred as Myrtle Wilson in The Great Gatsby and as Henley Reeves in Now You See Me.

Fisher was born in Muscat, Oman, the daughter of Elspeth Reid and Brian Fisher.^[3] Her parents are Scottish and, at the time of her birth, resided in Oman because her father worked as a banker for the United Nations.^[4] While she was still in her early years, they moved to Bathgate, Scotland, and when she was six years old, moved once again to Perth, Western Australia, where she was brought up.^[5] She has four brothers, and has said that she had a "great" upbringing in Perth with a "very outdoorsy life".^[2] She attended Methodist Ladies' College and also Walliston Primary School. She also appeared in lead roles in school productions, such as Little Shop of Horrors.

Fisher first met English comedian Sacha Baron Cohen in 2002 at a party in Sydney, Australia.^[13] The couple became engaged in 2004, and wed on 15 March 2010, in Paris, France.^[14][15] The couple have two daughters: Olive (born October 17, 2007)^[16][17] and Elula Lottie Miriam (born August 2010).

Before marrying, Fisher converted to Judaism, saying, "I will definitely have a Jewish wedding just to be with Sacha. I would do anything — move into any religion — to be united in marriage with him. We have a future together, and religion comes second to love as far as we are concerned."^[19] She completed her conversion in early 2007, after three years of study.^[20] She took the Hebrew name Ayala (איילה), the Hebrew word for doe, and has described herself as keeping Shabbat.^[21][22][23]

Fisher has said that her "sensibility is Australian" and that she has a "laid-back attitude to life" that she feels is "very Australian". Her mother and siblings live in Athens, Greece, while her father divides his time between Frankfurt, Germany, and Nicaragua.