Mirza Athar Baig is a Pakistani novelist, playwright and short story writer. He is associated with the Philosophy Department at the Government College University in Lahore. His fiction works include the novel Ghulam Bagh (The Garden of Slaves) which is considered one of the central works of literature in the Urdu language. The novel has acquired cult following among the youth and prestige among Urdu language critics. Three editions of Ghulam Bagh have been published in Pakistan within two years.

In addition to Ghulam Bagh, a collection of his short stories, titled Beh Afsana (The Non-story) was published in 2008. His second novel, Sifar se aik tak (From zero to one) was published in 2009.

Athar Baig has also written several television plays, including Daldal, Hissar, Khwab Tamasha and Nashaib.