Rebecca June Hewitt (née Cartwright; born 23 July 1983) is an Australian actress and singer. From 1998 to 2005, Hewitt played Hayley Smith Lawson on the soap opera Home and Away. As Bec Cartwright, Hewitt released an eponymous pop music album in 2002. In 2005, she married professional tennis player Lleyton Hewitt.
Cartwright began her acting career at age 5 for television commercials. In 1992, she made her mainstream television debut on an episode of Police Rescue. She has also guest starred in Water Rats and Roar.
She won her breakout role and best-known role to date in 1998, portraying Hayley Smith Lawson on Home and Away. Cartwright became a series fan favourite and earned herself numerous Logie Award nominations until 2005. In the same year, Cartwright earned a Most Popular Actress win. She coincidentally fell pregnant within months of her 'Home and Away' character, and then left the series to become a full-time mother. For a short period of time, Ella Scott Lynch replaced her as Hayley before shortly departing the series.