Marin Robu (born 19 March 2000) is a Moldovan weightlifter. He competed at the World Weightlifting Championships in 2018 and in 2019. In 2021, he won the silver medal in the men's 73 kg event at the 2021 European Weightlifting Championships held in Moscow, Russia. In 2019, he won the silver medal in the men's junior 73 kg event at the 2019 European Junior & U23 Weightlifting Championships in Bucharest, Romania. A year later, he won the silver medal in the men's 73 kg event at the Roma 2020 World Cup in Rome, Italy.