Marcos Giron (born July 24, 1993; Spanish: Marcos Girón) is an American professional tennis player.He achieved a career-high singles ranking of No. 64 on 12 July 2021 and a doubles ranking of No. 199 on 1 July 2019. He won the men’s singles in the Ojai Tennis Tournament in 2011. In 2014, Giron won the singles title at the NCAA Division I Men’s Tennis Championship for UCLA.

