Carlos M. Martínez (born May 26, 1982 in Villa Vasquez, Dominican Republic) is a former relief pitcher in Major League Baseball who played for the Miami Marlins.

In his first season in the United States, he played for the Gulf Coast Marlins, finishing with a record of 1–2, an ERA of 1.11, and seven saves.

The Marlins, who fielded a very young team in 2006, started the season with nine rookies on their Opening Day roster, including five players with no major league experience: Martínez, Dan Uggla, Eric Reed, Reggie Abercrombie, and Ricky Nolasco.

He then went back on the disabled list, having aggravated his elbow injury; the Marlins shut him down for the season shortly afterward so that he could undergo Tommy John surgery.

He returned to the Marlins on August 3, 2007, and pitched 1 inning while striking out 1 batter and giving up 2 earned runs.