Jesús Fernando Martínez Álvarez (born October 10, 1988) is a Dominican former professional baseball outfielder.

He played in Major League Baseball (MLB) with the New York Mets and Houston Astros.

[3] Martinez then saw his status as a blue chip prospect decline over the next few years, due in large part to his frequent stints on the disabled list.

Due to his accumulated time on the major league roster, Martinez' prospect status expired after 2010.

[7] On June 18, 2013, Martínez was traded from the Astros to the New York Yankees for minor league pitcher Charles Basford.

[8] On August 5, 2013, Martínez was suspended 50 games by the MLB for violating its drug policy and connection to Biogenesis.

On February 6, 2015, Martínez signed with the Rojos del Aguila de Veracruz of the Mexican League.