The men's 100m breaststroke events at the 2023 World Para Swimming Championships were held at the Manchester Aquatics Centre between 31 July and 6 August.

Event	Gold	Silver	Bronze
SB4	Antonios Tsapatakis  Greece	Andrii Drapkin  Ukraine	Nicolas Rivero  Argentina
SB5	Antoni Ponce Bertran  Spain	Leo McCrea  Switzerland	Danylo Semenykhin  Ukraine
SB6	Yang Hong  China	Nelson Crispín  Colombia	Yevhenii Bohodaiko  Ukraine
SB8	Carlos Serrano Zárate  Colombia	Vicente Almonacid  Chile	Xu Haijiao  China
SB9	Stefano Raimondi  Italy	Maurice Wetekam  Germany	Hector Denayer  France
SB11	Rogier Dorsman  Netherlands	Danylo Chufarov  Ukraine	Keiichi Kimura  Japan
SB12	Vali Israfilov  Azerbaijan	Oleksii Fedyna  Ukraine	Martin Alex Villarejo  Spain
SB13	Taliso Engel  Germany	Nurdaulet Zhumagali  Kazakhstan	David Henry Abrahams  United States
SB14	Naohide Yamaguchi  Japan	Nicholas Bennett  Canada	Jake Michel  Australia

Final

Eight swimmers from eight nations took part.^[1]

Rank	Name	Nation	Result	Notes
	Antonios Tsapatakis	Greece	1:39.53
	Andrii Drapkin	Ukraine	1:40.83
	Manuel Bortuzzo	Argentina	1:46.08
4	Miguel Ángel Rincón	Colombia	1:47.48
5	Luis Huerta Poza	Italy	1:47.63
6	Muhammad Nur Syaiful Zulkafli	Malaysia	1:48.13
7	Luis Huerta Poza	Spain	1:54.98
8	Zeyad Kahil	Egypt	1:56.35

Final

Eight swimmers from seven nations took part.^[2]

Rank	Name	Nation	Result	Notes
	Stefano Raimondi	Italy	1:06.36
	Maurice Wetekam	Germany	1:08.89
	Hector Denayer	France	1:09.00
4	Riccardo Menciotti	Italy	1:09.95
5	James Leroux	Canada	1:10.29
6	Ruan Felipe Lima de Souza	Brazil	1:10.55
7	Fredrik Solberg	Norway	1:12.27
8	Tomás Cordeiro	Portugal	1:13.15