Deborah Cook (July 6, 1938 – April 22, 2019) was an American operatic soprano who had a prolific international opera career during the 1970s and 1980s. Her career was primarily focused in Germany where she lived from 1972 through 1985. However, she did travel extensively throughout Europe and in the United States, performing in operas, concerts, recitals, and recording for radio productions. A gifted coloratura soprano, Cook sang a wide repertoire that encompassed English, German, French, and Italian opera from a variety of musical periods. She notably sang in a number of world premieres including Hans Werner Henze's We Come to the River at the Royal Opera, London in 1976.