Atanas Mladenov (Bulgarian: Атанас Младенов, born 3 January 1960) is a retired Bulgarian high jumper.
He competed at the 1980 Olympic Games without reaching the final.
His championship record of 2.15 metres set in 1980 was improved already in 1981 by Georgi Gadzhev.
He equalled the championship record of 2.16 metres but was surpassed by Valentin Getov in 1981.
This biographical article relating to Bulgarian athletics is a stub.