Salvador Gordo, 18, secured qualification for the 100-meter butterfly event by adding 720 points, while Catarina Sousa, 21, will compete in the 100-meter freestyle after accounting 657.
The two swimmers beat Pedro Pinotes, from Sporting, Henriques Mascarenhas, who trains in England, and Daniel Francisco and Lia Lima, who are preparing in Rio Maior.
In the Tokyo 2020 Olympic Games, which will be held between July 23 and August 8, Angola will be represented in the sailing competitions, by the women's handball team and judoka Diassonema Neide, African champion in 2019.