Gillian Flynn is an American author and television critic for Entertainment Weekly. She has so far written one novel, Sharp Objects.

Her book has received wide praise, including from authors such as Stephen King. The dark plot revolves around a serial killer in a Missouri town, and the reporter who has returned from Chicago to cover the event. Themes include dysfunctional families, sexuality, violence and self-harm.

In 2007 the novel was shortlisted for the Crime Writers' Association Duncan Lawrie, CWA New Blood and Ian Fleming Steel Daggers, winning in the last two categories.

Flynn, who lives in Chicago, grew up in Kansas City, Missouri. She graduated at the University of Kansas, and qualified for a Master's degree from Northwestern University.