Anne Sofie von Otter (born 9 May 1955) is a Swedish mezzo-soprano. Her repertoire encompasses lieder, operas, oratorios and also rock and pop songs.

Von Otter was born in Stockholm, Sweden. Her father was Göran von Otter, a Swedish diplomat in Berlin during World War II. She grew up in Bonn, London and Stockholm. She studied in Stockholm and at the Guildhall School of Music and Drama in London, where her teachers included Vera Rózsa. In 1982, she won second prize in the ARD International Music Competition.