| Roberto Dueñas | |
| Height Ft: | 7 |
| Height In: | 3 |
| Weight Lb: | 301.4 |
| Nationality: | Spanish |
| Birth Date: | 1 November 1975 |
| Birth Place: | Madrid, Spain |
| Draft Year: | 1997 |
| Draft Round: | 2 |
| Draft Pick: | 57 |
| Draft Team: | Chicago Bulls |
| Career Start: | 1994 |
| Career End: | 2007 |
| Years1: | 1994–1995 |
| Team1: | Fuenlabrada |
| Years2: | 1995–1996 |
| Team2: | CB Cornellà |
| Years3: | 1996–2005 |
| Team3: | FC Barcelona |
| Years4: | 2005–2006 |
| Team4: | CB Girona |
| Years5: | 2006–2007 |
| Team5: | Joventut Badalona |
| Years6: | 2007 |
| Team6: | CB Prat |
| Years7: | 2007 |
| Team7: | Joventut Badalona |
| Highlights: |
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Roberto Dueñas Hernandez (born 1 November 1975) is a retired Spanish professional basketball player. At a height of 7feet tall, he played at the center position.
Dueñas was drafted with the last overall pick (#57), of the 1997 NBA draft, by the Chicago Bulls, but he never played in the NBA.
Dueñas played professionally with FC Barcelona from 1996 to 2005, during which time he won a EuroLeague championship in the 2002–03 season. In honor of his play with Barcelona, his #12 jersey number was retired.
Dueñas was a member of the senior Spain national basketball team. He played at the 2000 Summer Olympics and the 2004 Summer Olympics with Spain.