Daniel Alberto "Cata" Díaz (born 13 July 1979) is an Argentine professional football manager and former player who played as a central defender. After starting at Rosario Central, he went on to spend most of his career in Spain, amassing La Liga totals of 174 matches and three goals over six seasons, mainly with Getafe. He also had two spells with Boca Juniors. Díaz appeared for Argentina at the 2007 Copa América.