| Roles | Competed in Olympic Games |
|---|---|
| Sex | Female |
| Full name | Margaret H.•Iwasaki |
| Used name | Margaret•Iwasaki |
| Born | 10 May 1942 in Vancouver, British Columbia (CAN) |
| Measurements | 159 cm / 54 kg |
| NOC | Canada |
Margaret Iwasaki had the following podium finishes at major championships: 2nd in the 1959 Pan American Games 4×100 metres freestyle (with Helen Hunt, Sara Barber, and the non-Olympian Sandra Scott), 2nd in the 1959 Pan American Games 4×100 metres medley (with Sara Barber and the non-Olympians Janice Shepp and Sandra Scott).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1960 Summer Olympics | Swimming (Aquatics) | CAN |
Margaret Iwasaki | |||
| 100 metres Freestyle, Women (Olympic) | 24 | |||||
| 400 metres Freestyle, Women (Olympic) | ||||||
| 100 metres Butterfly, Women (Olympic) | =11 | |||||
| 4 × 100 metres Medley Relay, Women (Olympic) | Canada | 9 |