Stanisław Barcewicz (16 April 1858 – 2 November 1929) was a noted Polish violinist, conductor and teacher. Although his repertoire included almost all of the classical and romantic violin literature, he was valued primarily for his interpretations of works by Henryk Wieniawski and Felix Mendelssohn. He also premiered works by his teacher Pyotr Ilyich Tchaikovsky, including the Polish premiere of the Violin Concerto in D. He played on a Guadagnini violin.
Stanisław Barcewicz was born in Warsaw in 1858, and first studied violin at the Institute of Music there under Apollinaire de Kontski (Apolinary Kątski) and Władysław Gorski. At the age of 11 he publicly performed Beriot's Violin Concerto No. 7 in G major. He then studied at the Moscow Conservatory, where his teachers were Ferdinand Laub, Jan Hřímalý and Pyotr Ilyich Tchaikovsky. He graduated in 1876 with a Gold Medal.
On 20 or 21 September 1878, as part of the 1878 Paris World Exhibition, he performed at the Trocadéro in a concert of works by Tchaikovsky, including the first public performance of the Valse-Scherzo in C, conducted by Nikolai Rubinstein. He later toured Europe extensively, including appearances in Leipzig, Dresden, Hamburg, Elberfeld, Koblenz, Berlin, Königsberg, London, Denmark, Sweden, Norway, Russia, and Riga.
In 1881 Barcewicz premiered Johan Svendsen's Romance for Violin and Orchestra in Kristiania (Oslo). On 14 January 1892 he gave the Polish premieres of Tchaikovsky's Violin Concerto in D and Sérénade mélancolique, in Warsaw, under the composer's baton.