John J. Lennon is an American journalist and prison writer from Sheepshead Bay, Brooklyn. He has written for major publications including The Atlantic and The New York Times while serving a sentence of 28 years to life at Sing Sing Correctional Facility for second-degree murder and drug sales. Lennon published his first book, The Tragedy of True Crime, in 2025. His work as a writer has continued despite his incarceration, establishing him as a notable voice in prison journalism.