This article is about the Japanese rock music group. For the Japanese illustrator, see Hidari (illustrator). For the butterfly genus, see Hidari (skipper).
The word hidari means "left" in Japanese, though the actual origin of the band's name comes from the first syllable of each of the three founding members' names, "Hiroshi", "Daisuke", and "Ryosuke". For that reason, it is spelled in the phonetic alphabet of katakana instead of the more representative kanji.