The women's 100 metre freestyle event at the 1948 Olympic Games took place between 30 July and 2 August at the Empire Pool. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated (unlike backstroke, breaststroke, and butterfly events). Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.

Results

Heats Rank Athlete Country Time Notes 1 Fritze Carstensen 1:06.5 2 Ann Curtis 1:06.9 3 Greta Andersen 1:07.0 4 Marie-Louise Linssen-Vaessen 1:07.5 5 Irma Heijting-Schuhmacher 1:07.9 6 Ingegerd Fredin 1:08.1 7 Judit Temes 1:08.3 8 Karen Margrethe Harup 1:08.4 9 Marie Corridon 1:08.4 10 Marjorie McQuade 1:08.5 11 Piedade Coutinho-Tavares 1:08.6 12 Elisabeth Ahlgren 1:08.7 13 Brenda Helser 1:09.0 14 Marianne Lundquist 1:09.0 15 Lillian Preece 1:09.0 16 Patricia Nielsen 1:09.4 17 Josette Arène 1:09.7 18 Margaret Wellington 1:09.8 19 Hannie Termeulen 1:09.8 20 Denise Spencer 1:10.0 21 Eleonora Schmitt 1:10.8 22 Eileen Holt 1:12.0 23 Ginette Jany-Sendral 1:12.1 24 Fernande Caroen 1:12.1 25 Magda Bruggemann 1:12.5 26 Mária Littomeritzky 1:13.0 27 Kay McNamee 1:13.3 28 Irene Strong 1:13.5 29 Gisèle Vallerey 1:14.0 30 Enriqueta Duarte 1:14.9 31 Zsuzsa Nádor 1:15.8 32 Maria da Costa 1:16.0 33 Adriana Camelli 1:16.5 34 Marianne Erismann 1:19.9

Semifinals Rank Athlete Country Time Notes 1 Greta Andersen 1:05.9Q 2 Fritze Carstensen 1:07.5 Q 3 Ann Curtis 1:07.6Q 4 Irma Heijting-Schuhmacher 1:07.7 Q 5 Marie-Louise Linssen-Vaessen 1:08.4 Q 6 Ingegerd Fredin 1:08.4 Q 7 Elisabeth Ahlgren 1:08.6 q 8 Karen Margrethe Harup 1:08.7 q 9 Marie Corridon 1:08.9 10 Marianne Lundquist 1:09.3 11 Lillian Preece 1:09.3 12 Marjorie McQuade 1:09.5 13 Piedade Coutinho-Tavares 1:09.5 14 Patricia Nielsen 1:09.6 15 Judit Temes 1:09.7 16 Brenda Helser 1:10.0

Final

Rank Athlete Country Time Notes Greta Andersen 1:06.3 Ann Curtis 1:06.5 Marie-Louise Linssen-Vaessen 1:07.6 4 Karen Margrethe Harup 1:08.1 5 Ingegerd Fredin 1:08.4 6 Irma Heijting-Schuhmacher 1:08.4 7 Elisabeth Ahlgren 1:08.8 8 Fritze Carstensen 1:09.1

References