Michelle Eileen McNamara (April 14, 1970 – April 21, 2016) was an American true crime author.
She was the author of I'll Be Gone in the Dark: One Woman's Obsessive Search for the Golden State Killer, a true crime book based on the Golden State Killer, and helped coin the name "Golden State Killer".
The book was released posthumously in February 2018 and is being adapted as an HBO documentary series.