Swimming at the 1968 Summer Olympics – Men's 100 metre breaststroke
The men's 100 metre breaststroke event at the 1968 Summer Olympics took place between 18 and 19 October. This swimming event used the breaststroke. 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 | Nikolay Pankin | | 1:08.9 | |
| 2 | Klaus Katzur | | 1:09.4 | |
| 3 | Dave Perkowski | | 1:09.5 | |
| 4 | Michael Günther | | 1:10.3 | |
| 5 | Osamu Tsurumine | | 1:10.5 | |
| 6 | Nicolas Gilliard | | 1:12.8 | |
| 7 | Eduardo Moreno | | 1:13.7 | |
Heat 2
| Rank | Athlete | Country | Time | Note |
| 1 | Nobutaka Taguchi | | 1:09.8 | |
| 2 | Vladimir Kosinsky | | 1:10.0 | |
| 3 | Ken Merten | | 1:10.6 | |
| 4 | Liam Ball | | 1:12.1 | |
| 5 | Leiknir Jónsson | | 1:16.3 | |
| 6 | Abel Muñoz | | 1:19.4 | |
Heat 3
| Rank | Athlete | Country | Time | Note |
| 1 | Egon Henninger | | 1:09.6 | |
| 2 | Ladislau Koszta | | 1:10.1 | |
| 3 | Józef Klukowski | | 1:11.0 | |
| 4 | Thomas Aretz | | 1:11.1 | |
| 5 | Sándor Szabó | | 1:11.3 | |
| 6 | Stuart Roberts | | 1:12.7 | |
| 7 | Ivan Gomina | | 1:15.1 | |
Heat 4
| Rank | Athlete | Country | Time | Note |
| 1 | José Sylvio Fiolo | | 1:09.5 | |
| 2 | Gregor Betz | | 1:10.3 | |
| 3 | Amman Jalmaani | | 1:10.6 | |
| 4 | Slavko Kurbanović | | 1:11.6 | |
| 5 | Roger Roberts | | 1:11.7 | |
| 6 | Leroy Goff | | 1:13.7 | |
| 7 | Arturo Carranza | | 1:28.0 | |
Heat 5
| Rank | Athlete | Country | Time | Note |
| 1 | Don McKenzie | | 1:08.1 | |
| 2 | Yevhen Mykhailov | | 1:09.3 | |
| 3 | Bill Mahony | | 1:09.7 | |
| 4 | Osvaldo Boretto | | 1:10.3 | |
| 5 | Felipe Muñoz | | 1:10.6 | |
| 6 | Yohan Kende | | 1:12.3 | |
Heat 6
| Rank | Athlete | Country | Time | Note |
| 1 | Ian O'Brien | | 1:08.9 | |
| 2 | Alberto Forelli | | 1:09.3 | |
| 3 | Thomas Johnsson | | 1:10.0 | |
| 4 | José Durán | | 1:12.3 | |
| 5 | Javier Jiménez | | 1:16.3 | |
| 6 | Eduardo Ramos | | 1:31.2 | |
Semifinals
Heat Two
Heat Three
Final
| Rank | Athlete | Country | Time | Notes |
| Don McKenzie | | 1:07.7 | OR |
| Vladimir Kosinsky | | 1:08.0 | |
| Nikolai Pankin | | 1:08.0 | |
| 4 | José Sylvio Fiolo | | 1:08.1 | |
| 5 | Yevgeny Mikhaylov | | 1:08.4 | |
| 6 | Ian O'Brien | | 1:08.6 | |
| 7 | Alberto Forelli | | 1:08.7 | |
| 8 | Egon Henninger | | 1:09.7 | |
Key: OR = Olympic record
