Marta Alexandra Cox Villarreal (born 20 July 1997) is a Panamanian professional women's football midfielder who plays for the Turkish Super League club Fenerbahçe, and Panama women's national team.

[9] She played in her country for Universitario (formerly Chorrillo FC) in the Liga de Fútbol Femenino.

[7][12] She played for Pachuca in the Liga MX Femenil, leaving the club at the end of 2023.

[14] Mid January 2025, Cox moved to Turkey, and signed a one-and-half-year deal with the Istanbul-based club Fenerbahçe to start playing in the second half pf the 2024-25 Super League season.

This biographical article related to women's association football in Panama is a stub.