The men's 100m backstroke S9 event at the 2012 Summer Paralympics took place at the London Aquatics Centre on 31 August. There were two heats; the swimmers with the eight fastest times advanced to the final.
Competed from 10:30.
Competed at 18:32.
Q = qualified for final. PR = Paralympic 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
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