The Women's 100 metre backstroke S12 event at the 2020 Paralympic Games took place on 27 August 2021, at the Tokyo Aquatics Centre.

Final 17:06 27 August 2021:

Rank Lane Name Nationality Time Notes+100m backstroke final 5 Hannah Russell 1:08.44 4 Daria Pikalova 1:08.76 3 Maria Carolina Santiago 1:09.18 4 6 María Delgado 1:12.83 5 7 Alessia Berra 1:14.33 6 1 Yaryna Matlo 1:16.25 7 2 Analuz Pellitero 1:17.78 8 8 Aliya Rakhimbekova 1:23.74

References