Jennifer Vyvyan (13 March 1925 – 5 April 1974) was a British classical soprano who had an active international career in operas, concerts, and recitals from 1948 up until her death in 1974. She possessed a beautifully clear, steady voice with considerable flexibility in florid music. She was praised for her subtle phrasing and her dramatic gifts enabled her to create vivid individual portrayals. Although she sang a broad repertoire, she is particularly remembered for her association with the works of Benjamin Britten; notably singing roles created for her in the world premieres of several of his operas with the English Opera Group.