Juan José Díaz Galiana (8 January 1949 – 6 December 2017), known as Juanjo Díaz or simply Juanjo, was a Spanish football manager. In June 2001 Juanjo was named as manager of second-division side CD Badajoz. That October, however, he was relieved of his duties after winning only two points out of a possible 27. He died in Terrassa, Catalonia, at the age of 68, following a long illness.