Sol Martínez Fainberg (born 13 November 2002, Oviedo) is a retired Spanish-Argentinian rhythmic gymnast.

[2] She competed in the 2017 Pan American Acrobatic Gymnastics Championships in Daytona Beach, Florida, United States and finished 7th in the all-around final, 10th with hoop, 8th with ball, 6th with clubs, and 7th with ribbon.

[3] She debuted in the senior category in 2018 at the Rhythmic Gymnastics Grand Prix in Moscow but did not advance to the finals.

She competed in but did not place at the Pan American Championship in Lima, Peru in 2018[4] or at the World Challenge Cup in Pesaro, Italy and Guadalajara, Spain in 2018 or 2019.

Martínez started 2022 by competing at the World Cup in Sofia and then Baku, garnering average scores at both events.