Tommy Paul defeated defending champion Denis Shapovalov in the final, 6–4, 2–6, 6–4, to win the singles tennis title at the 2021 Stockholm Open. It was Paul's first ATP Tour title.

Seeds The top four seeds receive a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky losers

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links Main draw Qualifying draw