Georgy Lvovich Catoire (Russian: Гео́ргий Льво́вич Катуа́р, French: Georges Catoire) (Moscow 27 April 1861 – 21 May 1926) was a Russian composer of French heritage.
Catoire studied piano in Berlin with Karl Klindworth (a friend of Richard Wagner) from whom he learned to appreciate Wagner. He became one of the few Russian 'Wagnerite' composers, joining the Wagner society in 1879.
Catoire graduated from Moscow University in mathematics in 1884 with outstanding honours. Upon graduating, he worked for his father's commercial business, only later becoming a full-time musician. It was at this time that Catoire began taking lessons in piano and basic harmony from Klindworth's student, V. I. Willborg. These lessons resulted in the composition of a piano sonata, some character pieces, and a few transcriptions. The most famous of these transcriptions was the piano transcription of Tchaikovsky's Introduction and Fugue from the First Orchestral Suite (which Jurgenson later published at the recommendation of Tchaikovsky).
Not satisfied with his lessons with Willborg, Catoire went to Berlin in late 1885 to continue his lessons with Klindworth. Throughout 1886, he made brief trips to Moscow, and on one of these trips, he became acquainted with Tchaikovsky, who was greatly pleased with Catoire's set of piano variations. Tchaikovsky told the younger composer that, "it would be a great sin if he did not devote himself to composition". It was during this visit to Moscow that Catoire was introduced to the publisher Jurgenson. Catoire continued to study piano with Klindworth in Berlin throughout 1886, and simultaneously studied composition and theory with Otto Tirsch. Not satisfied with Tirsch's instruction, he began study with Philip Rufer. These lessons were also short-lived but resulted in the composition of a string quartet.
Catoire returned to Moscow in 1887. He declined to make a debut as a concert pianist, despite Klindworth's recommendation. Catoire met Tchaikovsky again, and he showed him (along with Gubert and Sergei Taneyev) the string quartet which he had written in Berlin for Rufer. They all agreed that the work was musically interesting but lacking in texture. On Tchaikovsky's recommendation, Catoire went to Rimsky-Korsakov in St Petersburg with a request for composition and theory lessons. In a letter to Rimsky-Korsakov, Tchaikovsky later described Catoire as, "very talented... but in need of serious schooling."