Daniel Casey is an English actor who is best known for playing DS Gavin Troy in the first six series of the long-running television programme Midsomer Murders. He has also appeared in a number of other television shows, including Our Friends in the North, Steel River Blues, and Marchlands.

Casey was born in Stockton-on-Tees, County Durham, England, in 1972. He studied English literature at Durham University, and then trained as an actor at the Drama Centre London. Casey's first professional acting role was in the touring production of Dead Fish in 1996. He made his television debut in the BBC series Our Friends in the North in 1996. In 1997, Casey was cast as DS Gavin Troy in Midsomer Murders. He played the role for six series, and his character was one of the most popular in the show's history. After leaving Midsomer Murders, Casey has appeared in a number of other television shows, including Steel River Blues, Marchlands, and Coronation Street. He has also appeared in a number of films, including The Last King of Scotland and The Damned United. Casey is married to Ellie Casey, and they have two sons. He is a keen supporter of Sunderland AFC.