Riccardo Eugenio Drigo (ru. Риккардо Эудженьо Дриго), (30 June 1846 – 1 October 1930) was an Italian composer of ballet music and Italian opera, a theatrical conductor, and a pianist. Drigo is most noted for his long career as kapellmeister and Director of Music of the Imperial Ballet of St. Petersburg, Russia, for which he composed music for the original works and revivals of the choreographers Marius Petipa and Lev Ivanov. Drigo also served as Chef d'orchestre for Italian opera performances of the orchestra of the Imperial Mariinsky Theatre. During his career in St. Petersburg, Drigo conducted the premieres and regular performances of nearly every ballet and Italian opera performed on the Tsarist stage.