With the cancellation of the 2021 Pan American Qualification Tournament in Buenos Aires, Jean Carlos Caicedo (men's featherweight) and two-time Olympian Julio Castillo (men's heavyweight) finished among the top five of their respective weight divisions to secure their places on the Ecuadorian squad based on the IOC's Boxing Task Force Rankings for the Americas.

Ecuador qualified one modern pentathlete for the women's event, signifying the country's Olympic debut in the sport.

Marcela Cuaspud secured a selection by finishing among the top two for Latin America and thirteen overall at the 2019 Pan American Games in Lima.

Mimi Barona secured a spot previously allocated by the defending champion Daniella Rosas, as the next highest-ranked surfer vying for qualification, following her silver-medal finish at the 2019 Pan American Games in Lima, Peru.

[20] Men Women For the first time since Barcelona 1992, Ecuador entered one athlete into the table tennis competition at the Games.

Alberto Miño scored a second-stage final triumph to earn one of the remaining two tickets in the men's singles at the 2021 Latin American Qualification Tournament in Rosario, Argentina.

One of them secured a place in the women's freestyle 50 kg by progressing to the top two finals at the 2021 World Qualification Tournament in Sofia, Bulgaria.