Bronislava Nijinska (8 January 1891 [old style 27 December 1890] – 22 February 1972) was a Russian ballerina, choreographer, and teacher of Polish descent. Her parents were dancers. She was one of three siblings and the sister of Vaslav Nijinsky.
She danced with the Imperial Ballet in St. Petersburg and the Ballets Russes. She was a choreographer for the Ballets Russes, with important modernist dance titles to her credit: Les Noces (1923), Le Train Bleu (1924) and Les Biches (1924). She guided the re-creation of these works in modern times.
She died in Pacific Palisades, California. She was twice married and had two children.