Jaga Juno (1900 – 22 March 1944) was a Polish actress. She was active in theatre and film in the early 1920s. During the German occupation of Poland, Juno was a Gestapo informant; in a raid by the Home Army in 1943, her husband Kazimierz Junosza-Stępowski was killed while trying to protect her. In March 1944, returning to her apartment after a period of refuge, she was shot and killed by Home Army members.