Swimming at the 1988 Summer Olympics – Men's 100 metre breaststroke
The men's 100 metre breaststroke event at the 1988 Summer Olympics took place between 18–19 September at the Jamsil Indoor Swimming Pool in Seoul, South Korea.Records
Prior to this competition, the existing world and Olympic records were as follows.Results
Heats
Rule: The eight fastest swimmers advance to final A, while the next eight to final B.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 8 | Adrian Moorhouse | | 1:02.19 | Q, NR |
| 2 | 6 | Victor Davis | | 1:02.48 | Q |
| 3 | 8 | Dmitry Volkov | | 1:02.49 | Q |
| 4 | 8 | Károly Güttler | | 1:02.80 | Q |
| 5 | 7 | Gianni Minervini | | 1:02.86 | Q |
| 6 | 8 | Christian Poswiat | | 1:02.99 | Q |
| 7 | 7 | Richard Schroeder | | 1:03.05 | Q |
| 8 | 7 | Ronald Dekker | | 1:03.08 | |
| 8 | 7 | Tamás Debnár | | 1:03.08 | |
| 10 | 6 | Aleksey Matveyev | | 1:03.25 | q |
| 11 | 6 | Alexander Mayer | | 1:03.54 | q |
| 12 | 8 | Mark Warnecke | | 1:03.56 | q |
| 13 | 8 | Petri Suominen | | 1:03.58 | q |
| 14 | 7 | Hironobu Nagahata | | 1:04.02 | q |
| 15 | 6 | Daniel Watters | | 1:04.04 | q |
| 16 | 6 | Chen Jianhong | | 1:04.09 | q |
| 17 | 6 | James Parrack | | 1:04.23 | |
| 18 | 5 | Kenji Watanabe | | 1:04.35 | |
| 19 | 7 | Pablo Restrepo | | 1:04.43 | |
| 20 | 7 | Raik Hannemann | | 1:04.46 | |
| 21 | 5 | Pierre-Yves Eberle | | 1:04.53 | |
| 22 | 5 | Ian McAdam | | 1:04.56 | |
| 22 | 5 | David Leblanc | | 1:04.56 | |
| 24 | 4 | Tsai Hsin-yen | | 1:04.58 | |
| 25 | 4 | Radek Beinhauer | | 1:04.61 | |
| 26 | 3 | Yoon Joo-il | | 1:04.68 | |
| 27 | 7 | Étienne Dagon | | 1:04.71 | |
| 28 | 6 | Alexander Marček | | 1:04.95 | |
| 29 | 8 | Thomas Böhm | | 1:04.96 | |
| 30 | 5 | Jin Fu | | 1:05.02 | |
| 31 | 8 | Cameron Grant | | 1:05.10 | |
| 32 | 4 | Joaquín Fernández | | 1:05.19 | |
| 33 | 3 | Sidney Appelboom | | 1:05.21 | |
| 34 | 4 | Gary O'Toole | | 1:05.34 | |
| 35 | 3 | Javier Careaga | | 1:05.37 | |
| 36 | 5 | Cédric Penicaud | | 1:05.46 | |
| 37 | 5 | Cícero Tortelli | | 1:05.50 | |
| 38 | 6 | Jan-Erick Olsen | | 1:05.54 | |
| 39 | 4 | Anthony Beks | | 1:05.65 | |
| 40 | 2 | Alexandre Yokochi | | 1:05.68 | |
| 41 | 2 | Ng Yue Meng | | 1:05.87 | |
| 42 | 5 | Eyal Stigman | | 1:05.92 | |
| 43 | 4 | Sergio López Miró | | 1:06.08 | |
| 44 | 3 | Wirmandi Sugriat | | 1:06.22 | |
| 45 | 3 | Luc van de Vondel | | 1:06.24 | |
| 46 | 4 | Richard Lockhart | | 1:06.27 | |
| 47 | 4 | Nikolaos Fokianos | | 1:06.30 | |
| 48 | 2 | Lars Sørensen | | 1:06.48 | |
| 49 | 3 | Manuel Gutiérrez | | 1:06.73 | |
| 50 | 3 | Patrick Concepcion | | 1:06.74 | |
| 51 | 2 | Arnþór Ragnarsson | | 1:07.93 | |
| 52 | 2 | Watt Kam Sing | | 1:08.03 | |
| 53 | 3 | Victor Ruberry | | 1:09.49 | |
| 54 | 2 | Quách Hoài Nam | | 1:10.90 | |
| 55 | 2 | Kraig Singleton | | 1:11.68 | |
| 56 | 1 | Michele Piva | | 1:13.94 | |
| 57 | 1 | Amine El-Domyati | | 1:14.40 | |
| 58 | 2 | Bazlur Mohamed Rahman | | 1:14.97 | |
| 59 | 1 | Gaspar Fragata | | 1:16.18 | |
| 60 | 1 | Obaid Al-Rumaithi | | 1:17.01 | |
| 61 | 1 | Vivaldo Fernandes | | 1:17.98 | |
| 1 | Trevor Ncala | | | |
Swimoff
* Opted to swim for the consolation final instead.Finals
Final B
Final A
