Mirza Athar Baig (Urdu: مرزا اطہر بیگ, born 7 March 1950) is a Pakistani novelist, playwright and short story writer.

His first novel, Ghulam Bagh (Slave Garden), is considered one of the central works of literature in the Urdu language.

[5] In addition to Ghulam Bagh, a collection of Baig's short stories, titled Beh Afsana (Anti-Story) was published in 2008.

In July 2010, DAWN newspaper published a review of Sifar se aik tak [6] commenting on its popularity with the youth, which Baig's literature is reputed to enjoy in general.

He has been credited with introducing postmodernism to Urdu literature by literary critics, but his own assessment of this topic is rather different: "Generally, I don’t say much when labelled as ‘post-modern’ because I consider it as a naïve and simplistic categorization.