Jason Reynolds (born December 6, 1983) is an American author of novels and poetry for young adult and middle-grade audiences, including Ghost, a National Book Award Finalist for Young People's Literature.

Born in Washington, D.C. and raised in neighboring Oxon Hill, Maryland, Reynolds found inspiration in rap and began writing poetry at nine years old. His reading and writing focused on poetry for some 20 more years; he was 17 before he read his first novel cover to cover. He published several poetry collections before publishing his first novel in 2014, When I Was The Greatest, which won the Coretta Scott King/John Steptoe Award for New Talent.

In the next four years, Reynolds wrote seven more novels, most notably the New York Times best-selling Track series—Ghost (2016), Patina (2017), and Sunny (2018)—and As Brave As You (2016), winner of the 2016 Kirkus Prize, the 2017 NAACP Image Award for Outstanding Literary Work for Youth/Teen, and the 2017 Schneider Family Book Award. He also wrote a Marvel Comics graphic novel called Miles Morales: Spider-Man (2017).

In 2017, Reynolds returned to poetry with Long Way Down, a novel in verse that was named a Newbery Honor book, a Printz Honor Book, and best young adult work by the Mystery Writers of America's Edgar Awards.