Elachista hiranoi is a moth in the Elachistidae family. It was described by Sugisima in 2005. It is found in Japan (Kyushu, Honshu). The length of the forewings is 3.5–4.3 mm for males and 3.4–4.1 mm for females. The forewings are blackish, with silvery markings. Adults have been recorded on wing in late June and early July, probably in one generation per year.