Leonid (Leo) Fyodorovich Myasin, born on July 28, 1896, in Moscow and died on March 15, 1979, in Cologne, Germany, was a dancer and choreographer of Russian origin who created over 70 ballets.

He studied ballet at the Moscow Theatre School, where he was noticed by Sergei Diaghilev, who came to Moscow in search of artists for his troupe and invited him to Europe. After the dismissal of Vaslav Nijinsky at the end of 1913, Myasin became the principal dancer and one of the main choreographers of the 'Russian Seasons.' During his time with the 'Russian Ballets,' Myasin had a relationship with Diaghilev, although his personal preferences were likely heterosexual.

The break between Myasin and Diaghilev was dramatic. As early as 1916, during an American tour, Diaghilev told the troupe that he would not tolerate Myasin's affairs with female artists. However, in 1920, during the preparation of a new version of 'The Rite of Spring,' Myasin began a relationship with English ballerina Vera Savina. In Rome, Diaghilev hired private detectives to follow the couple and received reports on their meetings in hotels. Eventually, Diaghilev got Savina drunk and brought her to the room of the sleeping Myasin, throwing her onto his bed with the words: 'Look, here is your ideal.' After this, Myasin immediately left the hotel and severed all ties with Diaghilev.

After Diaghilev's death and the effective end of his enterprise, Myasin became the ballet master of the Ballets Russes de Monte-Carlo, founded by Colonel de Basil and Rene Blum, which preserved the repertoire of Diaghilev's Russian Ballet and continued its traditions. Subsequently, de Basil's Original Russian Ballet troupe presented some of Myasin's productions on tour.

In 1924, Myasin acquired Li Galli, a small archipelago of three islets near the Italian town of Positano. He settled on the largest of them, Gallo-Lungo, where he built a villa and a guest house, and in the ruins of a Saracen tower, he organized a ballet school with dance halls and rooms for students. Myasin's attempts to build a theater on the island were unsuccessful, but in the 1930s, architect Le Corbusier continued the development of the island.