The women's 100m freestyle S9 event at the 2012 Summer Paralympics took place at the London Aquatics Centre on 7 September. There were two heats; the swimmers with the eight fastest times advanced to the final.
Competed from 09:40.
Competed at 17:37.
'Q = qualified for final. AS = Asian Record. OC = Oceania Record.
Official London 2012 Paralympics Results: Heats Archived 2012-09-13 at the Wayback Machine Official London 2012 Paralympics Results: Final Archived 2012-09-13 at the Wayback Machine