Anna Gerasimova (Russian: А́нна Гео́ргиевна Гера́симова, born 19 April 1961, Moscow), also known by her nickname Umka (Russian: У́мка), is a Russian rock singer-songwriter, the leader of the group Umka and Bronevik. She is also a poet, literary translator, literature researcher, traveler, and a significant person in the Russian hippie movement.