Pavel Alehavich Mialeshka is a Belarusian track and field athlete competing in the javelin throw. In 2019, he competed in the men's javelin throw at the 2019 World Athletics Championships in Doha, Qatar. He did not qualify to compete in the final. He also competed in the men's javelin throw at the 2017 World Championships in Athletics held in London, United Kingdom. In this competition he also did not qualify to compete in the final.