The Women's 100 metre backstroke S2 event at the 2020 Paralympic Games took place on 25 August 2021 at the Tokyo Aquatics Centre.

Heats The swimmers with the top eight times, regardless of heat, advanced to the final.

Rank Heat Lane Name Nationality Time Notes 1 2 4 Yip Pin Xiu 2:14.46 2 2 5 Feng Yazhu 2:32.44 3 1 4 Miyuki Yamada 2:34.35 4 2 3 Angela Procida 2:40.54 5 1 3 Veronika Medchainova 2:40.97 6 1 5 Fabiola Ramirez 2:52.80 7 2 6 Zsanett Adámi 3:09.16 8 1 6 Elif Ildem 3:16.84 9 2 2 Katarina Draganov Čordaš 3:28.25

Final

Rank Lane Name Nationality Time Notes 4 Yip Pin Xiu 2:16.61 3 Miyuki Yamada 2:26.18 7 Fabiola Ramirez 2:36.54 4 5 Feng Yazhu 2:37.04 5 2 Veronika Medchainova 2:40.05 6 6 Angela Procida 2:43.58 7 1 Zsanett Adámi 3:11.88 8 8 Elif Ildem 3:13.39

References