Ron Polonsky is an Israeli Olympic swimmer. He won silver medals in the 2019 European Junior Championships and the 2023 European U-23 Championships, as well as the gold medal in the 2024 European Aquatics Championships, in the 200m IM. He also competed in the 2020 Tokyo Olympics, and won the silver medal in the 2024 NCAA Division I Championships in the 100 Y Breast. Polonsky represented Israel at the 2024 Paris Olympics in the 200 metre individual medley and the Mixed 4×100 metre medley relay.