Gabriel José Almeida Lopes (born 15 May 1997) is a Portuguese swimmer. He competed in the men's 50 metre backstroke event at the 2017 World Aquatics Championships. In 2019, he competed in three events at the 2019 World Aquatics Championships held in Gwangju, South Korea. He competed in the men's 200 metre individual medley at the 2020 Summer Olympics.