Graham Linehan (born 1969) is an Irish television writer and director who, often in partnership with Arthur Mathews, has written or co-written a number of popular television comedies. He is most noted for his involvement in Father Ted.

He attended the Marist Catholic University School (secondary) on lower Leeson street in Dublin and graduated in 1986. Following that, he attended Plunkett's School in Whitehall, followed by Colaiste Dhulaigh in Coolock, before joining Hot Press as a writer. He also had a column with the magazine In Dublin before he moved to London, England. Linehan hooked up with Mathews, whom he had worked alongside at Irish Rock Music magazine Hot Press. In their early collaborations they were responsible for segments in many high profile sketch shows including Alas Smith and Jones, Harry Enfield and Chums, The All New Alexei Sayle Show and the Ted & Ralph characters in The Fast Show (the characters were created by Linehan and Mathews and played by Charlie Higson and Paul Whitehouse).

However, it was with Father Ted (three series, 1995-1998) that Linehan and Mathews made their biggest splash on the public imagination.

They then wrote the first series of the sketch show Big Train, but Linehan bowed out for the second series.

They also wrote the "Dearth of A Salesman" episode for the series "Coogan's Run", which featured the character Gareth Cheeseman. In late 2003, they were named one of the 50 funniest acts to work in television by The Observer.

Linehan has since written for other shows, including Brass Eye. With Dylan Moran, he co-wrote the first series of Black Books, a series to which Mathews also contributed. Linehan has also contributed material to Blue Jam, and its television adaption Jam.

Most recently, Linehan wrote and directed the 2006 Channel 4 sitcom The IT Crowd, in which he sought to move away from the recent British trend towards mock-documentary comedies, and to return to an old-fashioned style of sitcom, filmed before a studio audience.