[1] The Cook Islands delegation consisted of 18 athletes (7 male and eleven female) that competed across four sports: athletics (track and field), lawn bowls, swimming and weightlifting.

On February 27, 2018, track and field athlete Patricia Taea was named as the nation's flag bearer at the opening ceremony.

[3] Taiki Paniani and Aidan Zittersteijn won the country's first ever Commonwealth Games medal, when they won bronze in the men's pairs lawn bowls event.

The Cook Islands entered three athletes (one male and two female).

[2] The Cook Islands entered ten lawn bowlers (five male and five female).