Euros Lyn (/ˈeɪrɒs ˈlɪn/) (born 1971) is a Welsh television director.
Lyn started out directing Welsh-language shows broadcast on S4C such as Pam Fi Duw?, Iechyd Da and Y Glas.
He directed nine episodes of Doctor Who and won the BAFTA Cymru award for Best Director for "Silence in the Library" and the 2007 Hugo Award for Best Dramatic Presentation, Short Form for "The Girl in the Fireplace". He also directed David Tennant's last episodes of Doctor Who.
In 2008, he directed Children of Earth, the five-episode Torchwood mini-series (often called series 3 of the show).
In 2007, he directed the pilot of George Gently, based on the Inspector Gently novels by Alan Hunter, for BBC One. He has also directed four episodes of the long-running BBC medical drama Casualty.
Lyn won the BAFTA Cymru for Best Director three times, most recently for the first series of Sherlock with Benedict Cumberbatch and Martin Freeman, which also won RTS and BAFTA Best Drama awards. He also directed Fifteen Million Merits, an episode of the anthology series Black Mirror for Channel 4, which won an International Emmy for Best Drama Series. In 2013 he directed three episodes of Broadchurch with David Tennant and Olivia Colman, and a further three episodes of the second installment of BAFTA-winning series Last Tango in Halifax, after directing three episodes of the first series.