After his playing career, Renteria has remained in baseball ever since. His first minor league managerial job was in 1998 with the Brevard County Manatees in the Marlins organization. He continued to manage in the Marlins system until 2001. In 2003, he was named the hitting coach for the Lake Elsinore Storm in the Padres organization, and in 2004 he became the Storm's manager. After three seasons with the Storm, in 2007 he was moved up to the Triple-A Portland Beavers. He was promoted to a major league coaching job in 2008.
^Hertzel, Bob, The Pittsburgh Press, "Renteria hopes lifetime in the minors ends with Pirates"(March 16, 1986, Section D6); "Being of Mexican descent, he had a chance to see the people and places of his heritage."