Otakar Jeremiáš (17 October 1892 – 5 March 1962) was a Czech composer, conductor and teacher. He was the son of composer Bohuslav Jeremiáš and the brother of composer Jaroslav Jeremiáš.
Jeremiáš was born in Písek. An accomplished cellist and pianist, he studied at the Prague Conservatory of Music. He lived in České Budějovice, where he directed a local music school until February 1929, when he was appointed head conductor of the Prague Radio Symphony Orchestra.
In 1945 Jeremiáš left the Radio Symphony Orchestra to become president of the Prague National Theatre Opera. From 1949 he was chairman of the Federation of Czechoslovak Composers (Svaz československých skadatelů). He died in Prague.
He was influenced by the works of Bedřich Smetana, Zdeněk Fibich and Leoš Janáček.
Selected works: