Arístides Fabián Rojas Aranda (born 1 August 1970) is a former Paraguayan footballer who played as a striker.
He represented Paraguay at the 1998 FIFA World Cup. At club level he played for Club Guaraní, Olimpia Asunción, Club Atlético Colegiales (all from Paraguay), Aalst (Belgium), RC Lens (France), Independiente and Unión de Santa Fe (Argentina).
Rojas was the Paraguayan 1st Division top goalscorer in 1996, playing for Guarani.