Graham Linehan (/ˈlɪnəhæn/, born 22 May 1968) is an Irish television writer and anti-transgender activist. He created or co-created the sitcoms Father Ted (1995–1998), Black Books (2000–2004) and The IT Crowd (2006–2013). He has also written for Count Arthur Strong, Brass Eye and The Fast Show.

After an episode of The IT Crowd was criticised as transphobic, Linehan became involved in anti-transgender activism, arguing that transgender activism endangers women and likening the use of puberty blockers to Nazi eugenics programmes. In 2020, he was suspended from the social network Twitter for "repeated violations" of the rules.