Kathleen Winter is an English-Canadian short story writer and novelist. Born in the north of England and raised in Newfoundland and Labrador, she began her career as a script writer for Sesame Street before becoming a columnist for The Telegram in St. John's.

Winter's debut short story collection, boYs, was published in 2007 and won that year's Winterset Award and Metcalf-Rooke Award. Her novel Annabel was published in 2010, and won the Thomas Head Raddall Award. It was a shortlisted nominee for the Scotiabank Giller Prize, the Rogers Writers' Trust Fiction Prize and the 2010 Governor General's Awards.It held the distinction of being the only novel to make the short list of all three awards in 2010. In 2011 it was shortlisted for the 2011 Orange Prize for Fiction. In 2014 it was chosen for the Canada Reads competition, where it was championed by actress Sarah Gadon.

A second book of short stories, The Freedom in American Songs, was released in 2014, along with a nonfiction book entitled Boundless: Tracing Land and Dream in a New Northwest Passage. Boundless was a shortlisted nominee for the 2014 Hilary Weston Writers' Trust Prize for Nonfiction.

Winter lives in Montreal with her husband, Jean. She is also the sister of novelist Michael Winter.