Courtney Summers is a Canadian writer known for her young adult fiction. Born in 1986 in Belleville, Ontario, Canada, Summers has become renowned for her uncompromising and bold storytelling. Her most well-known works include Cracked Up to Be (2008), This Is Not a Test (2012), All the Rage (2015), and Sadie (2018).

Summers is celebrated for her history of risky artistic choices and pushing boundaries with novels that are not for the faint of heart. She has received over 20 starred reviews and numerous awards and honors, including the Edgar and ITW Thriller Awards.