Deshamanya Neville Ubeysingha Jayawardena (commonly known as N. U. Jayawardena) (1908–2002) was a Sri Lankan Senator, economist, banker and entrepreneur. He was the first Ceylonese Governor of the Central Bank of Ceylon and founder of the Mercantile Group of Companies that formed the Merc Bank Sri Lanka, Sampath Bank and the former Mercantile Credit Ltd.