Katherine Mary Duignan (born 1974) is a New Zealand novelist, short-story writer, reviewer and teacher.

The critical component of her PhD explored narration in Gilead by Marilynne Robinson.

Duignan now lives in Wellington with her partner and three children, and in 2018 is teaching fiction at the International Institute of Modern Letters at Victoria University.

Duignan has published short fiction and poetry in Sport, Landfall and takahē.

[4] The New Ships was long listed for the Acorn Foundation Fiction Prize[5] in the 2019 Ockham Awards.