Poppy Miller (born 28 February 1969) is an English actress. Her screen credits include The Knock (2000), Attachments (2002), The Commander (2003), Red Cap (2004), If I Had You (2006), Goldplated (2006), Torn (2007), Emma(2009), Sex & Drugs & Rock & Roll (2010, House of Anubis(2012), Mapp & Lucia (2014), London Unplugged (2018), Innocent(2021), The Gathering (2024), Midsomer Murders Episode: "Treasures of Darkness" (2025), and Death in Paradise (2026).
In 1969, Miller was born in Norwich, England. She attended The Hewett School, studied philosophy and English at New Hall, University of Cambridge and later attended the Webber Douglas Academy of Dramatic Art.
Miller's first taste of theatre was in 1995, when she was in the chorus of the stage-play AgamemnonâÂÂs Children at the Gate Theatre (London). Her acting debut was in 1996, as Mary Crawford in Mansfield Park at the Chichester Festival Theatre. In 1997, she starred as Win Littlewit in Bartholomew Fair (play) for the Royal Shakespeare Company at the Swan Theatre, Stratford-upon-Avon. Staying for The Two Gentlemen of Verona (1998). In 2005, Miller played Mary Magdalene in The Last Days of Judas Iscariot at the Almeida Theatre. She continued with the RSC in Twelfth Night (2008), at the Courtyard Theatre, Stratford-upon-Avon.
In May 2016, it was announced that Miller had been cast as Ginny Weasley in Harry Potter and the Cursed Child. She reprised her performance on Broadway at the Lyric Theatre in 2018.
In 2003, she starred as DC Carol Browning Amanda Burton and Pip Torrens in The Commander. She starred in Series 2 of Red Cap (2004). Miller starred in the ITV television movie If I Had You (2006). She played a leading role as Isabella Knightley alongside Jonny Lee Miller, Michael Gambon, and Tamsin Greig in the 2009 television serial Emma. In 2012, Miller played Vera Devenish in season 2 of the Nickelodeon show House of Anubis. Miller played the Padre's wife, Evie Bartlett, in the BBC's remake of E. F. Benson's Mapp & Lucia (2014).
In 2021, she starred as Superintendent Denham in the ITV series Innocent. In 2024, she played Dawn in Channel 4's The Gathering.