Ricardo Ismael Rojas Mendoza (born 26 January 1971) is a retired Paraguayan professional footballer who played as a full-back.
He first came into notability at Libertad in Paraguay, transferring to Estudiantes in 1995, where he established himself and received his first call-up for Paraguay national team.
In 1999, he moved to Benfica, but less than a year and half later was back at Argentina, playing for River Plate until 2006.
He represented Paraguay seven times, being a participant at the 1998 FIFA World Cup.