Deniz Dogan Mehmet (born 19 September 1992) is a professional footballer who plays as a goalkeeper for Scottish Championship club Dundee United.
A former youth team player at Arsenal, Charlton Athletic, Manchester United, and West Ham United, Mehmet then signed for Welling United for a brief spell in 2011.
Having represented Turkey up to under-19 level, English-born Mehmet then spent four years in Turkey as a reserve goalkeeper at Kayserispor.
Mehmet then signed for Scottish club Falkirk in January 2016, where he stayed for one year.
Mehmet then returned to England to sign for Port Vale in March 2017, before signing for Dundee United later that same year.
He joined Queen of the South in March 2019, before returning to Dundee United four months later.