Chiko (circa 709 - circa 780) was a Buddhist priest of the Sanron Sect (Madhyamika school founded originally by Nagarjuna, which was brought in from China in 625 by Ekwan and was headquartered in Horyu-ji Temple in Nara, the sect belonging to the Provisional Mahayana school), who lived in the Nara period.
智光（ちこう、和銅2年（709年）?－宝亀11年（780年）?）は、奈良時代の三論宗の僧。