Men 100m Breaststroke Swimming XXXII Olympic Games Tokyo, Japan 2020 - Saturday, 24th July - Sunday, 25th July 2021 - Gold Medal: Adam Peaty, Great Britain
Olympic Qualifyng Time (OQT) - 59.93s (19) - NOC can enter up to 2 swimmers with OQT.
Olympic Selection Time (OST) - 1:01.73 (38) -, invitational - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking.