Mieczysław Karłowicz

 Mieczysław Karłowicz ([miɛt͡ʂɨswaf ˈkarwɔvit͡ʂ], 11 December 1876 – 8 February 1909) was a Polish composer and conductor.
Karłowicz was born in Vishneva (now part of Belarus) into a noble family, being part of the Clan of Ostoja. His father Jan was a Polish linguist, lexicographer and musician. As a child he studied the violin, for which instrument he later wrote his only concerto.

Karłowicz studied at Warsaw with Zygmunt Noskowski, Stanisław Barcewicz, Piotr Maszyński and Gustaw Roguski. He later studied in Berlin with Heinrich Urban, for whom he dedicated his Serenade for Strings which he composed and performed when he was still Urban's student. From 1906 to 1907 he studied conducting with Arthur Nikisch.