Klement Slavický (September 22, 1910, Tovačov, Moravia – September 4, 1999, Prague, Czech Republic) was a Czech composer of modern classical music.
Slavicky studied under Karel Boleslav Jirák and Josef Suk. He was inspired by Moravian folk music and the works of Leoš Janáček. The best-known of his works are the double chorus Lidice, Rapsodické variace pro orchestr (Rhapsodic Variations for Orchestra), the sonata Přátelství (Friendship) for violin and piano, the dramatic fresco Cesta ke světlu (The Way Toward the Light), the brilliant Toccata from the cycle Three pieces for piano (1947) and Symfonietta IV, Pax hominibus in universo orbi, which was dedicated by Slavický to the United Nations for the 40th anniversary of its birth. There is also a song-cycle Oh, My Heart So Wretched, which sets five Slovak folk poems and which has recently (2010) been recorded by the soprano Marie Fajtová. The 12 Small Studies for Piano have been recorded in 2016 by the slovak pianist Zuzana Zamborska (Diskant, DK 0164-2131).