Vaclav (Wentsel), or Jules or Julius Wentsel Reisinger (1828 – 1893) was a Czech ballet choreographer. He created more than twenty works on various European stages and directed the Moscow company of the Bolshoi Theatre. Reisinger choreographed the first stage production of "Swan Lake" as well as the production of the first ballet performance for the opening of the Prague National Theatre in 1884. His work on "Swan Lake" was considered unsuccessful by contemporary critics, although the ballet was popular enough among the general public that it was kept in the active repertoire of the Bolshoi Theatre for seven years and was performed over thirty times. In fact, the production was not pulled until the scenery and costumes were worn and threadbare. Much of its popularity was presumably due to its beautiful musical score which was critically acclaimed even though the choreography was not.