Gustavo Cristian Matosas Paidón (born 25 May 1967) is an Argentine-born Uruguayan former professional footballer who played as a midfielder.

The son of former footballer Roberto Matosas, Gustavo was born in Buenos Aires, Argentina in 1967, as his father was playing for River Plate at the time.

Matosas made his debut in 1985 playing for Peñarol in Uruguay, with whom he won the Copa Libertadores in 1987, as well as two league titles, and went on to play for Málaga in Spain, San Lorenzo in Argentina, São Paulo in Brazil, Tianjin Teda in China, as well as having brief stints with other clubs in Argentina, Brazil, and Spain before retiring in 2001, last playing for Querétaro of the Mexican Primera División.

That year, he won the Copa América title with Uruguay after defeating Chile 1–0 in the Final.

On 12 June 2016 Matosas signed a one-year contract with the Saudi Arabian team Al Hilal FC.