The Women's 100 metre breaststroke SB11 swimming event at the 2004 Summer Paralympics was competed on 20 September. It was won by Elaine Barrett, representing .
1st round
Qualified for final round
Heat 1 20 Sept. 2004, morning session Rank Athlete Time Notes1 1:34.23 2 1:46.38 3 1:47.00 4 1:47.16 DSQ
Heat 2 20 Sept. 2004, morning session Rank Athlete Time Notes1 1:31.96 2 1:38.09 3 1:42.38 4 1:43.21 DNS
Final round
20 Sept. 2004, evening session Rank Athlete Time Notes 1:32.31 1:32.98 1:38.23 4 1:42.72 5 1:42.96 6 1:44.40 7 1:46.89 8 1:46.99
References