Claire Rhiannon Holt (born July 7, 1988) is an Australian actress, best known for the role of Emma Gilbert in the television series H2O: Just Add Water.
In addition to acting in H2O: Just Add Water, Claire has been featured in various advertisements for Dreamworld, Sizzlers and Queensland Lifesaving. She has also studied acting at school and privately. She recently attended the Nickelodeon UK Kids Choice Awards 2007 alongside co-stars Phoebe Tonkin and Cariba Heine. She is part of the cast of American film The Messengers 2. She will be playing the daughter of the lead role. Although, due her time filming in Bulgaria for the movie she won't be in a few of the series three H2O episodes. Claire has been featured on an H2O special which she went behind the scenes.