Lachezar Shumkov (Bulgarian: Лъчезар Шумков, born 28 February 1992) is a Bulgarian swimmer. He competed in the men's 50 metre breaststroke event at the 2017 World Aquatics Championships. In 2019, he represented Bulgaria at the 2019 World Aquatics Championships held in Gwangju, South Korea and he competed in the men's 50 metre breaststroke event. He did not advance to compete in the semi-finals.