| Competition: | 1. deild karla |
| Season: | 2020 |
| Winners: | Keflavík |
| Promoted: | Keflavík Leiknir Reykjavík |
| Relegated: | Magni Leiknir Fáskrúðsfjörður |
| Prevseason: | 2019 |
| Nextseason: | 2021 |
The 2020 1. deild karla (English: Men's First Division) is the 66th season of second-tier Icelandic football. Twelve teams contest the league. The season began on 19 June.[1]
The league was contested by twelve clubs. Eight remained in the division from the 2019 season.