Rubén Dario Maldonado Brizuela (born 29 April 1979 in Asunción) is a former Paraguayan football defender who last played for Nacional in the Paraguayan Primera División. He made his Italian Serie A debut on 11 March 2000, against Bologna F.C. 1909. Maldonado was part of the Paraguay national under-20 football team that participated in the 1999 FIFA World Youth Championship he has since gone on to represent Paraguay at senior international level.