Rita Sanz-Agero (born November 8, 1991 in Guatemala City) is a female modern pentathlete from Guatemala.
At age sixteen, Sanz-Agero became the youngest modern pentathlete to compete at the 2008 Summer Olympics in Beijing, where she finished thirty-fourth in the women's event, with a score of 4,844 points.Sanz-Agero is also the daughter of MarÃa Isabel Sanz; the granddaughter of Rita de Luna; and the niece of Silvia de Luna, all of whom were Olympic athletes.