Sing Sing was the name of a correctional facility operated by the State of New York, located in Ossining. It is located approximately 30 miles (48 km) north of New York City on the banks of the Hudson River.
- Eric Plummer spend several years in Sing Sing, based on a false conviction. He claimed that he was raped and tortured inside the prison. (SVU: "Wrath")
- Beto and Diablo from the Locotes Doces street gang terrorized many other prisoners inside Sing Sing. (L&O:"Life Line")
- Ned Bogden raped and murdered four women in the mid 1970s and one in the 21st century (SVU: "Bedtime"")
- Charles Webb there as part of the terms of a plea agreement dealing with his murder of Larry Feldman. (CI: "Crazy")