In Terminator 2: Judgment Day, what is the name of Sarah Connor's son?

Sarah Connor’s son in Terminator 2: Judgment Day is John Connor.

John is the future leader of the human resistance against Skynet. The film presents him as a troubled teenager whose importance is known before he fully understands the future role assigned to him. The reprogrammed T-800 is sent to protect him from the T-1000, which creates the sequel’s central partnership.

Edward Furlong played John in Terminator 2, his first film role. The character is older than in the first film, where Sarah is pregnant with him and Kyle Reese identifies him as humanity’s future leader. This connection makes John the biological son of Sarah and Kyle, not of any machine or human scientist.

Later films use different actors and different storylines for John, including Nick Stahl in Terminator 3 and Christian Bale in Terminator Salvation. Those casting changes do not alter the character’s identity in the core continuity.