Milko Kelemen (born March 30, 1924) is a Croatian composer.
Milko Kelemen was born in Slatina, Croatia (then Kingdom of Serbs, Croats and Slovenes). He studied under Stjepan Šulek in Zagreb, under Olivier Messiaen in Paris and Wolfgang Fortner in Freiburg amongst others.
Kelemen founded the Music Biennale Zagreb, an international contemporary music festival and served as its president from 1961 to 1979.
He also worked at the Electronic Siemens Studio in Munich and was invited to Berlin as Composer in Residence.
Kelemen is a recipient of many awards, most notably the Federal Cross of Merit, the prize of the ISCM, the Great Yugoslav State Prize, and the French order Chevalier des Arts et des Lettres.
He lives in Stuttgart, Germany. His works are published by Hans Sikorski Music Publishers.