In 2008, Kuncoro competed in Beijing Olympic Games but he was eliminated in the quarterfinal to the second seeded Lee Chong Wei in straight games. In June, he won the Indonesia Open Superseries beating Simon Santoso in the final 19–21, 21–14, 21–9 in Istora Senayan, Jakarta. In September, Kuncoro won the Japan Open Superseries beating Lee Chong Wei from Malaysia in straight sets 21–17, 21–11 in the final. Also in September, he captured the China Masters Superseries by beating China's Chen Jin 21–19, 21–18 in the final, thus becoming the first player to win the men's singles at three consecutive "superseries" tournaments.