Oleksandr Oleksandrovych Khyzhniak (; born 3 August 1995) is a Ukrainian amateur boxer. He earned a silver medal at the 2020 Summer Olympics in the middleweight event. At the 2024 Summer Olympics he won the gold medal in the same event. He comes from a family of boxers, with his second cousin being Ukrainian-Australian amateur boxer Anatoliy âÂÂNatâ Oliynyk.