Belize competed at the 2020 Summer Olympics in Tokyo.

[1] It was the nation's thirteenth appearance at the Olympics, although it previously appeared in two early editions under the name "British Honduras" (1968 in Mexico City, and 1972 in Munich).

Belize received the universality slots from the World Athletics to send two track and field athletes (one per gender) to the Olympics.

[3] Belize received an invitation from the Tripartite Commission to send a canoeist in the men's K-1 1000 m, marking the country's debut in the sport.

[4] Qualification Legend: FA = Qualify to final (medal); FB = Qualify to final B (non-medal) This article summarising a nation's participation in the Olympic Games is a stub.