Gudalur Narayanaswamy Balasubramaniam (6 January 1910 – 1 May 1965), popularly known as GNB, was an Indian Carnatic singer. He innovated the art through emphasis on laya control and reducing the gamakas which eventually made Carnatic music appeal to the lay and the learned alike. He was also a Tamil film actor.Ariyakudi Iyengar inspired him.