Tarun K. Saint was born in Kenya, and has lived in India since 1972. His interests include the literature of the Partition, science fiction and detective fiction. He is the author of Witnessing Partition: Memory, History, Fiction (2nd edition, 2020), based on his doctoral dissertation. He edited Bruised Memories: Communal Violence and the Writer (2002) and co-edited (with Ravikant) Translating Partition (2001). He also coedited Looking Back: India's Partition, 70 Years On, with Rakhshanda Jalil and Debjani Sengupta (2017). He has edited The Gollancz Book of South Asian Science Fiction, Volume 1 (2019) and Volume 2 (2021). The bilingual (Indian–Italian) science fiction anthology Avatar: Indian Science Fiction, co-edited with Francesco Verso, appeared in January 2020, and the bilingual SF collection Kalicalypse: Subcontinental Science Fiction (co-edited with Bodhisattva Chattopadhyay and Francesco Verso) in 2022. Ecoceanic: Global South SF (co-edited with Francesco Verso) was published in January 2024.

He has most recently edited the two volume books, The Hachette Book of Indian Detective Fiction (2024).