Antonia Mary Prebble (born 6 June 1984) is a New Zealand actress, best known for her role as Loretta West in the hit NZ comedy-drama Outrageous Fortune, as Trudy in The Tribe, and as Jane in The Blue Rose. Internationally she's best known for her role as Clare Langtree, the Gatekeeper in Power Rangers Mystic Force.
She is currently portraying Rita West in the television programme Westside and Edie Flanagan in the Australian TV programme Sisters.
Born on 6 June 1984 in Wellington, New Zealand, Antonia Mary Prebble is the middle of three children of John Prebble, a Sussex-born barrister and solicitor and a law professor at Victoria University of Wellington, and Nicola Mary Riddiford, an English teacher; Prebble has an older sister, Becky, and a younger brother, Ben, both of whom studied law. Her uncle Richard Prebble is a former politician. Another uncle, Mark Prebble, is the former head of the State Services Commission.