Carmen Rosa Caso Sierra (born November 29, 1981, in Santo Domingo) is a retired volleyball player from the Dominican Republic, who won the bronze medal with the Dominican women's national team at the 2007 NORCECA Championship.

[1] At the volleyball tournament during the 2006 Central American and Caribbean Games, she won the "Best Libero" award and the gold medal.

[2] She became the "Best Defender" of the 2006 TV Azteca's Women Stars Volleyball Cup, played in Monterrey, Mexico, and won by the team with a perfect record in 5 matches.

[3] At the 2007 Pan-American Cup she took the bronze medal with the National Team and also the "Best Libero" award.

[5] Rosa joined Mirador to play the 2011 FIVB Women's Club World Championship, and her team finished in 4th place after losing the Bronze Medal match to the Brazilian team Sollys/Nestle.