Swimming at the 1968 Summer Olympics – Women's 100 metre butterfly
The women's 100 metre butterfly event at the 1968 Olympic Games took place between 20 and 21 October. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.Medalists
Results
Heats
Heat 1
| Rank | Athlete | Country | Time | Note |
| 1 | Heike Hustede-Nagel | | 1:07.7 | |
| 2 | Ada Kok | | 1:08.5 | |
| 3 | Jeanne Warren | | 1:10.0 | |
| 4 | Yasuko Fujii | | 1:10.1 | |
| 5 | Patricia Obregón | | 1:12.4 | |
| 6 | Nam Sang-nam | | 1:16.9 | |
Heat 2
| Rank | Athlete | Country | Time | Note |
| 1 | Ellie Daniel | | 1:07.2 | |
| 2 | Tetiana Dev'iatova | | 1:07.6 | |
| 3 | Christine Strübing | | 1:09.2 | |
| 4 | Nel Bos | | 1:09.5 | |
| 5 | Oei Liana | | 1:11.2 | |
| 6 | Vivienne Smith | | 1:13.1 | |
| 7 | Catherine Grosjean | | 1:14.6 | |
Heat 3
| Rank | Athlete | Country | Time | Note |
| 1 | Lyn McClements | | 1:06.1 | |
| 2 | Andrea Gyarmati | | 1:07.4 | |
| 3 | Yvonne Tobis | | 1:12.0 | |
Heat 4
| Rank | Athlete | Country | Time | Note |
| 1 | Helga Lindner | | 1:08.0 | |
| 2 | Toni Hewitt | | 1:08.1 | |
| 3 | Margaret Auton | | 1:08.5 | |
| 4 | Carmen Gómez | | 1:14.7 | |
| 5 | Ruth Apt | | 1:15.3 | |
| 6 | Ana Marcial | | 1:17.1 | |
Heat 5
| Rank | Athlete | Country | Time | Note |
| 1 | Susan Shields | | 1:06.2 | |
| 2 | Sandra Whittleston | | 1:08.5 | |
| 3 | Gillian Treers | | 1:10.6 | |
| 4 | Marilyn Corson | | 1:10.7 | |
| 5 | Pauline Gray | | 1:13.5 | |
| 6 | Adriana Comolli | | 1:16.5 | |
Semifinals
Final
| Rank | Athlete | Country | Time | Notes |
| Lyn McClements | | 1:05.5 | |
| Ellie Daniel | | 1:05.8 | |
| Susan Shields | | 1:06.2 | |
| 4 | Ada Kok | | 1:06.2 | |
| 5 | Andrea Gyarmati | | 1:06.8 | |
| 6 | Heike Hustede-Nagel | | 1:06.9 | |
| 7 | Toni Hewitt | | 1:07.5 | |
| 8 | Helga Lindner | | 1:07.6 | |
