| Cook Islands at the 2018 Summer Youth Olympics | |
|---|---|
 | |
| IOC code | COK |
| NOC | Cook Islands Sports and National Olympic Committee |
| inBuenos Aires, Argentina 6 – 18 October 2018 | |
| Competitors | 1 in 1 [1] sports |
| Medals |
|
| Summer Youth Olympics appearances | |
|
| |
Cook Islands participated at the 2018 Summer Youth OlympicsinBuenos Aires, Argentina from 6 October to 18 October 2018.
The Cook Islands qualified 1 athlete.
| Athlete | Event | Heats | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | ||
| Bede Aitu | 50 metre backstroke | 28.90 | 24 | did not advance | |||
| 100 metre backstroke | 1:03.49 | 25 | did not advance | ||||
