| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Female | |
| Full name | Hiroko•Makino | |
| Used name | Hiroko•Makino | |
| Original name | 牧野•紘子 | |
| Born | 20 August 1999 in Tokyo, Tokyo |  JPN |
| NOC | Japan | JPN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2024 Summer Olympics | Swimming (Aquatics) | JPN |
Hiroko Makino | |||
| 4 × 200 metres Freestyle Relay, Women (Olympic) | Japan | 13 | ||||
| 200 metres Butterfly, Women (Olympic) | 13 |
