| Competition: | 3. divisjon |
| Season: | 2021 |
| Promoted: | Gjøvik-Lyn Ørn Horten Staal Jørpeland Frigg Træff Ullern |
| Relegated: | 18 teams |
| Matches: | 546 |
| Total Goals: | 2082 |
| League Topscorer: | Vital Curtis Kaba (17 goals) |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
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.[3]
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Vital Curtis Kaba | Frigg | 17 |
| 2 | Rocky Lekaj | Gjøvik-Lyn | 16 |
| Elias Heggland Myrlid | Brann 2 | ||
| Even Østensen | Staal Jørpeland | ||
| 5 | Eirik Kjørsvik | Træff | 14 |
| 6 | Peder Dovland | Mandalskameratene | 13 |
| 7 | Ulrik Ferrer | Frigg | 12 |
| Ørjan Isaksen Skallebø | Skjervøy | ||
| 9 | Preben Finstad | Brumunddal | 11 |
| Mikael Harbosen Haga | Træff | ||
 Daniel Kraska | Toten | ||
| Tim Nilsen | Lysekloster | ||
| Magnus Solum | Elverum | ||
| Sander Alvestad Svela | Start 2 |