The 2021 Veikkausliiga was the 91st season of top-tier football in Finland. HJK were the defending champions and successfully defended their title.
RoPS (relegated after eight years in the top flight) were relegated to Ykkönen after finishing at the bottom of the 2020 season. Their place was taken by Ykkönen champions AC Oulu (promoted after a ten-year absence).
TPS (relegated after one year in the top flight) as 11th-placed team lost their Veikkausliiga spot after losing to second-placed Ykkönen team KTP (promoted after a five-year absence) in a relegation/promotion playoff.
<small>Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players and Managers may hold more than one non-FIFA nationality.</small>
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