Roberto Dueñas Hernandez (born 1 November 1975) is a retired Spanish professional basketball player.

At a height of 7 feet 3 inches (2.21 m) tall, he played at the center position.

Dueñas played professionally with FC Barcelona from 1996 to 2005, during which time he won a EuroLeague championship in the 2002–03 season.

Dueñas was a member of the senior Spain national basketball team.

This biographical article relating to a Spanish basketball figure is a stub.