The 2021 3. divisjon (referred to as Norsk Tipping-ligaen for sponsorship reasons) was a fourth-tier Norwegian football league season.
The league consisted of 84 teams divided into 6 groups of 14 teams each.
[1] The season began in early August 2021.
All teams played 13 matches instead of the normal 26.
[2] Furthermore, all reserve teams ("2" teams) were barred from promotion.