Dimitar Kuzmanov (Bulgarian: Димитър Кузманов, pronounced (listen); nickname: Miko; born 28 July 1993) is a Bulgarian professional tennis player and the current No. 2 Bulgarian in the ATP singles ranking. His highest singles ranking was No. 249 (24 December 2018), whilst his best doubles ranking was No. 445 (8 February 2016). Kuzmanov is a player of Tennis Club Lokomotiv Plovdiv and is coached by former Bulgarian tennis player Stefan Rangelov and by Bulgaria Fed Cup team's former tennis player and present captain Dora Rangelova. In 2011 he was invited to play for Bulgaria Davis Cup team.
Dimitar Kuzmanov was born in Plovdiv, Bulgaria, the son of Savko Kuzmanov (an aeronautical engineer) and Dora Rangelova (Bulgaria Fed Cup team's former tennis player and present team captain). His maternal family is entirely related to the sport. Dora's father Zdravko Rangelov, who is one of the founders of tennis in Plovdiv, has been a tennis player and longtime coach in Tennis Club Lokomotiv, whilst her mother has been a volleyball player and coach. Dora's brother, Stefan Rangelov is a former tennis player and present tennis coach. Kuzmanov began playing tennis at age of six when his mother Dora took him to play on courts of Tennis Club Lokomotiv Plovdiv, and Stefan was the man, that gave him a tennis racket and started training. Through the years, Dimitar Kuzmanov has affirmed as a player, who has won many national and international tournaments, he is a champion of Bulgaria in different age groups and participant in Bulgaria national tennis teams, including Davis Cup team.