Born on October 16, 1898. in Stara Zagora. He studied painting in Paris and Sofia. Worked in landscape, mainly seascape. He has traveled and lived in France, Italy, Greece, Turkey. Member of the Society of South Bulgarian Artists. Since 1920. arranges many solo exhibitions, participates in group exhibitions. He exhibited his works in Paris, Marseille, Constantinople, Budapest. He died on August 3, 1955. in Sofia.
Mario Zhekov visited Ohrid during the World War One . One oil on canvas with title “Near Ohrid” was sold by auction house Victoria, Sofia on 15.11.2012 (lot 101).