Full name: Reizo Koike
Original name: 小池 礼三
Gender: Male
Born: December 12, 1915 in Numazu, Shizuoka, Japan
Died: August 3, 1998
Country:
Japan
Sport: Swimming
Medals: 1 Silver, 1 Bronze (2 Total)
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 1932 Summer | 16 | Los Angeles | Swimming | Men's 200 metres Breaststroke | Japan | JPN | 2 | Silver | |
| 1936 Summer | 20 | Berlin | Swimming | Men's 200 metres Breaststroke | Japan | JPN | 3 | Bronze |
| Games | Age | City | Sport | Country | Phase | Unit | Rank | T | |
|---|---|---|---|---|---|---|---|---|---|
| 1932 Summer | 16 | Los Angeles | Swimming | Japan | Final | 2 | 2:46.6 | ||
| 1932 Summer | 16 | Los Angeles | Swimming | Japan | Semi-Finals | Heat One | 1 | QU/OR | 2:44.9 |
| 1932 Summer | 16 | Los Angeles | Swimming | Japan | Round One | Heat Two | 1 | QU/=OR | 2:46.2 |
| 1936 Summer | 20 | Berlin | Swimming | Japan | Final | 3 | 2:44.2 | ||
| 1936 Summer | 20 | Berlin | Swimming | Japan | Semi-Finals | Heat One | 1 | QU | 2:44.5 |
| 1936 Summer | 20 | Berlin | Swimming | Japan | Round One | Heat Five | 1 | QU | 2:43.8 |