The Tschaikovsky Pas de Deux is a ballet made by New York City Ballet co-founder and founding choreographer George Balanchine to an excerpt from Swan Lake, Op. 20, Act III, (1877) by Pyotr Ilyich Tchaikovsky. The premiere took place on Tuesday, March 29, 1960, at City Center of Music and Drama, New York.
Described by the New York City Ballet as "an eight-minute display of ballet bravura and technique", the piece uses music rediscovered in the archives of the Bolshoi Theatre. When Anna Sobeshchanskaya starred in the fourth performance of the 1877 Moscow production, she asked for more material for the role of Odile. Tchaikovsky hurriedly composed an extra number, but as it was not part of the original score and was not published with the rest of Swan Lake it was forgotten for more than 70 years. When the music was found in the Bolshoi archives in 1953, Balanchine successfully sought permission to use it for his own choreography.