Grethe Mogensen (born 25 May 1937) is a Danish actress and singer who was educated at private theaters Pupil School in 1959 with subsequent study trips to Berlin and Stockholm. Over the years she has appeared in numerous roles on stage, both in terms of operettas, revues and funny and serious characters. She has appeared on the scene Avenue, the new Scala, The New Theatre, The Danish Theatre, Theatre Aalborg, Odense Theatre, Amager scene and Nørrebro Theatre. ".