Cleo Massey (born 19 November 1993) is an Australian actress. She is best known for her portrayal of Kim Sertori in the television series H2O: Just Add Water. Massey has been performing on TV and film since the age of 11. In 2010, she was cast in the feature-length film The Little Things (2010) directed by Neil McGregor. In 2015, Cleo began a blog called Pass Around the Smile, based around living a positive life. Pass Around the Smile has since expanded into events, courses, online meditations and Positive Guidance cards.
Massey was born in Launceston, Tasmania.[citation needed] Her mother, Anna Waters-Massey, is an actress and acting teacher.[1][2] Massey attended her classes while growing up.[3] She has a younger brother, Joey.
Massey got married in December 2021, to Luke Dempsey-Ceh, her partner of 10 years. She announced her pregnancy in September 2023 via instagram. She gave birth to a daughter in March 2024