Women 100m Butterfly Swimming XXXII Olympic Games Tokyo, Japan 2020 - Saturday, 24th July - Sunday, 25th July 2021 - Gold Medal: Margaret Macneil, Canada
Olympic Qualifyng Time (OQT) --.----- - NOC can enter up to 2 swimmers with OQT.
Olympic Selection Time (OST) --.----- -, invitational - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking.