Rūta Society (Lithuanian: Vilniaus lietuvių kultūros draugija „Rūta“) was a Lithuanian cultural society in Vilnius (Vilna, Wilno), then part of the Russian Empire, active from 1909 to the outbreak of World War I in 1914. It organized various events, including lectures, literary evenings, and musical performances, but it is most noted for its contribution to the development of the Lithuanian theater. In total, Rūta staged about 50 plays.