Walter Basilio Barrionuevo (born in February 28, 1954) is an Argentine Justicialist Party (PJ) politician, and governor of Jujuy Province.
Born in FrÃas, Santiago del Estero Province, Barrionuevo enrolled at the National University of Tucumán, where he earned a Law degree in 1976.
He relocated to Jujuy Province, and between 1989 and 1990 was appointed Minister of Government, Justice, and Education by Governor Ricardo de Aparici.
He returned to Santiago del Estero as President of the Supreme Justice Tribunal from 1994 to 1995.