Ildemaro José Vargas (born July 16, 1991) is a Venezuelan professional baseball infielder for the Arizona Diamondbacks of Major League Baseball (MLB).
Vargas signed with the St. Louis Cardinals as an international free agent in June 2008. He played in the Cardinals organization until he was released in March 2015. After his release from the Cardinals he signed with Bridgeport Bluefish of the Atlantic League of Professional Baseball. A month later he signed a minor league deal with the Arizona Diamondbacks. The Diamondbacks added Vargas to their 40-man roster after the 2016 season. Vargas started 2017 with the Reno Aces and was called up to the Diamondbacks on June 29.