| Competition: | Kategoria e Tretë |
| Season: | 2021 |
| Winners: | Luftëtari 1st title |
| Promoted: | Luftëtari Murlani |
| Matches: | 30 |
| Total Goals: | 156 |
| Biggest Home Win: | Luftëtari 6−1 Osumi |
| Biggest Away Win: | |
| Highest Scoring: | |
| Longest Wins: | 8 matches Luftëtari |
| Longest Unbeaten: | 8 matches Luftëtari |
| Longest Winless: | 10 matches Drini |
| Longest Losses: | 10 matches Drini |
| Prevseason: | 2020 |
| Nextseason: | 2021–22 |
The 2021 Kategoria e Tretë was the 18th official season of the Albanian football fourth division since its establishment. The season began on 11 March 2021 and ended on 14 May 2021. There are 6 teams competing this season. Luftëtari and Murlani gained promotion to the 2021–22 Kategoria e Dytë. Luftëtari won their first Kategoria e Tretë title.[1]
Promoted to Kategoria e Dytë: