Claudio Paulino Villanueva Flores (born August 3, 1988) is an Ecuadorian racewalker. He placed 45th in the men's 50 kilometres walk at the 2016 Summer Olympics. He won the 2017 Pan American Race Walking Cup 50 kilometres race walk. In 2019, he competed in the men's 50 kilometres walk at the 2019 World Athletics Championships held in Doha, Qatar. He did not finish his race.