Karl James "K.J." Noons is an American mixed martial artist, boxer, and kickboxer currently competing in the UFC's Lightweight division. He is the former EliteXC Lightweight Champion, and has also competed for Strikeforce, and DREAM in Japan. He has also competed as a Welterweight in mixed martial arts, and as a Middleweight in boxing and kickboxing.
- Born: December 7, 1982 (age 35), Kailua
- Spouse: Melany Lorenzo
- Aliases: Karl James Noons
- Height: 5′ 11″ (1.8m)