Joshua Scott "JC" Chasez (born August 8, 1976 in Bowie, Maryland) is an American singer-songwriter, record producer, and occasional actor, best known as one of the lead vocalists in the former pop group 'N Sync. In 2004, Chasez released a solo album, Schizophrenic, and has gone on to write and produce for music acts such as Girls Aloud, Basement Jaxx, David Archuleta, and the Backstreet Boys. He is currently a judge for America's Best Dance Crew.

Chasez was adopted and raised by Roy and Karen Chasez. His biological mother entrusted her son's care to her former foster parents Roy and Karen when Chasez turned five, hoping that they would be able to provide him with an education and a stable family life. Chasez has said that he does not know who his biological father is, and has no plans to search for him.

After being adopted, Chasez was raised in Bowie, Maryland as a Mennonite. He has a younger brother named Tyler and a younger sister named Heather. Chasez attended the former Belair Junior High School and then Bowie High School. His mother read an article in the Washington Post announcing auditions for Disney's The Mickey Mouse Club, and encouraged Chasez to try out. Chasez was soon cast as a performer in the fourth season and stayed until the show's cancellation in 1994. It was during his time as a Mouseketeer that Chasez befriended future bandmate Justin Timberlake, along with other future entertainers.