2020 Mjøndalen IF Fotball season

The 2020 season was Mjøndalen IF's second successive season in the Eliteserien following their promotion in 2018.

Season events
On 12 June, the Norwegian Football Federation announced that a maximum of 200 home fans would be allowed to attend the upcoming seasons matches.

On 10 September, the Norwegian Football Federation cancelled the 2020 Norwegian Cup due to the COVID-19 pandemic in Norway.

On 30 September, the Minister of Culture and Gender Equality, Abid Raja, announced that clubs would be able to have crowds of 600 at games from 12 October.

Appearances and goals

 * colspan="14"|Players away from Mjøndalen on loan:
 * colspan="14"|Players away from Mjøndalen on loan:


 * colspan="14"|''Players who left Mjøndalen during the season
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