Gary Mitchell is a British playwright based in Northern Ireland. His plays, many of them political thrillers about contemporary life in Belfast, have been widely performed, and he has been called "Northern Ireland's greatest playwright" (Guardian).

His stage plays include In a Little World of Our Own (Abbey Theatre, Dublin, 1997), As the Beast Sleeps (Abbey Theatre, 1998), Tearing the Loom (Lyric Belfast, 1998), Trust (Royal Court Upstairs, London, 1999), The Force of Change (Royal Court, 2000, winner of the George Devine Award and the Evening Standard Award for Most Promising Playwright), and Loyal Women (Royal Court, 2003).