Emma Clarke (born 1971) is a writer of comedy and drama scripts and an award-winning voice-over artist, best known as the voice of the automated messages on the Bakerloo and Central lines of the London Underground. Between 2009 and 2017 Clarke's voice was replaced on the Circle, District, Hammersmith & City and Victoria lines by announcements voiced by Sarah Parnell. Most of Clarke's work has been used in television commercials and radio outside the United Kingdom, notably in the Netherlands, Australia, and the United States.