Cody William Miller (born January 9, 1992) is an American competitive swimmer who specializes in the breaststroke currently representing DC Trident at the International Swimming League. At the 2016 Summer Olympics, Miller won a bronze medal in the men's 100 metre breaststroke and a gold medal in the men's 4 × 100 metre medley relay, in which he performed the breaststroke leg of the final.