Martinez is a popular surname of Spanish origin, derived from the name Martin, meaning “of Mars,” the Roman god of war. It is one of the most common surnames in the Spanish-speaking world and has spread to other countries through migration. The name has many variations, including MartÃnez, Martines, Martinho, and Martine. Famous people with this surname include baseball player Pedro Martinez and actress Jada Pinkett Smith, who uses her middle name as her surname.