[1] The country's participation marked its seventeenth Summer Olympic appearance as an independent state, although it has previously competed in four other editions as a British colony, and as part of the West Indies Federation.

With the cancellation of the 2021 Pan American Qualification Tournament in Buenos Aires, Argentina, Ricardo Brown finished fourth in the men's super heavyweight division to secure a place on the Jamaican team based on the IOC's Boxing Task Force Rankings.

[4] Jamaica entered one diver into the Olympic competition by finishing in the top eighteen of the men's springboard at the 2021 FINA Diving World Cup in Tokyo, Japan.

British-born Danusia Francis booked a spot in the women's individual all-around and apparatus events, by finishing ninth out of the twenty gymnasts eligible for qualification at the 2019 World Championships in Stuttgart, Germany.

Ebony Drysdale Daley accepted a continental berth from the Americas as the nation's top-ranked judoka outside of direct qualifying position in the IJF World Ranking List of June 28, 2021.