Tamzin Maria Outhwaite (/ˈaʊθweɪt/; born 5 November 1970) is a British actress from London. Since coming to national notice playing Melanie Owen in the BBC One soap opera EastEnders from 1998 until 2002 and then from 2018 onwards, she has starred in a number of theatre and television productions, including army series Red Cap and crime drama New Tricks.
The daughter of Anna (née Santi) and Colin Frank Outhwaite, born in Ilford, London, Tamzin has two younger brothers, Kes and Jake Outhwaite. She was educated at Trinity Catholic High School, Woodford Green.
Outhwaite attended the Stagestruck Theatre Company as a teenager, taking part in several productions during the mid-1980s. While at school, she studied part-time at Sylvia Young Theatre School and on leaving school in 1987, she joined the London Studio Centre to study drama and dance, where one of her friends was television presenter Lucy Alexander.