Säsongen 6 av That '70s Show sändes på FOX från mercredi 29 octobre 2003 till mercredi 19 mai 2004. Den består av 25 avsnitt, det första heter "The Kids Are Alright" och det sista "The Seeker"..
Set in the Wisconsin suburbs of the United States, Eric Forman lives under the authority of his parents, Red and Kitty. Next door is his girlfriend/neighbor, Donna Pinciotti and her parents Bob and Midge. The rest of the gang includes Jackie, and her sometimes boyfriend, Kelso, Hyde, a conspiracy theorist and Fez, a foreign exchange student. The gang mostly likes to spend their time in Eric's basement, pondering their lives, parents, and their futures, while getting into many funny mishaps and adventures in their teenage lives along the way.