Her novel The Ever After of Ashwin Rao was shortlisted for the Scotiabank Giller Prize.
- The Toss of a Lemon. Random House, Inc. 2008. ISBN 978-0-307-35632-1., takes place in South India in the first half of the twentieth century.
- The Ever After of Ashwin Rao. Random House, Inc. 2014. ISBN 978-0-307-35634-5., explores the aftermath of the 1985 bombing of an Air India flight.
- "House of Sacred Cows," originally produced by Northern Light Theatre in Edmonton and later published in the volume Ethnicities: Plays from the New West (1999)
- "By Air, By Water, By Wood", Frog and Nightgown Productions 2000, published South Asian Review, 2008
- "Disco Does Not Suck", CBC Radio, 1999
- Anne Nothof; Padma Viswanathan; Marty Chan; Jonathan Christenson (1999). Anne Nothof, ed. Ethnicities: Plays from the New West. NeWest Press. ISBN 978-1-896300-03-0.
In the introduction to her stunning first novel, Padma Viswanathan describes her grandmother’s faltering attempts to recount their family history. “This time, she started farther back,” she writes of one occasion, “with a story I’d never heard: of her own grandmother, married as a child and widowed before she was out of her teens; of that grandmother’s son, childless and embittered; and her daughter, my grandmother’s mother, victimized by her marriage.” After trips to India, enormous amounts of research, and not a little invention, the result is The Toss of a Lemon.