Rui Sousa Martins Silva (; born 28 April 1993) is a Portuguese handballer for FC Porto and the Portuguese national team.
He represented Portugal at the 2020 European Men's Handball Championship and the 2021 World Men's Handball Championship. In 2025 he was part of the Portugal team that reached the semifinals of the World Championship for the first time in history. They lost the semifinals to Denmark and the third place playoff to France. At the 2026 European Men's Handball Championship he was part of the Portugal team that got 5th place, their best ever finish at a European Championship.