Switzerland's Belinda Bencic defeated the Czech Republic's Markéta Vondroušová in the final, 7–5, 2–6, 6–3, to win the gold medal in Women's Singles tennis at the 2020 Summer Olympics. It was Switzerland's first victory in the women's singles. In the bronze medal match, Ukraine's Elina Svitolina defeated Kazakhstan's Elena Rybakina, 1–6, 7–6^(7–5), 6–4. It was Ukraine's first Olympic tennis medal.

The tournament was held at the Ariake Coliseum in Kōtō, Tokyo, Japan from 24 July to 31 July 2021. There were 64 competitors from 35 countries.

Puerto Rico's Monica Puig was the reigning gold medalist from 2016, but she withdrew in order to recover from shoulder surgery. The 2016 silver medalist, Germany's Angelique Kerber, also withdrew prior to the tournament for rest. The Czech Republic's Petra Kvitová was the defending bronze medalist and attended her third consecutive Olympic Games, but was defeated in the second round by Belgium's Alison Van Uytvanck.

The medals for the competition were presented by Camilo Perez, IOC Member; Paraguay; and the medalists' bouquets were presented by Kelly Fairweather, ITF Secretary General; South Africa.

Olympijský tenisový turnaj žien na OH 2020 bol 14. ročníkom olympijského tenisového turnaja žien. Konala sa na tvrdom povrchu Ariake Tennis Park v Tokiu a hral sa od 24. júla do 31. júla 2021. Bohdana Jovanovská a Katarína Srebotniková reprezentovali Severné Macedónsko, Viktória Kuzmová a Anna Karolína Schmiedlová Slovensko a Tereza Martincová a Markéta Vondroušová Česko.