Aoi may refer to:
Ao (color), a Japanese color word (noun)
Aoi (name), a Japanese given name and a Japanese surname
Aoi, the Japanese name for various plants used in Japanese heraldry, including the hollyhock and wild ginger
Aoi, a shorthand for the Tokugawa clan which took the plant as its symbol
Aoi, Nagoya neighbourhood
Aoi Oshitayashiki residence in Aoi, Nagoya
Aoi Matsuri, a hollyhock festival that takes place annually on 15 May in Kyoto, Japan
Aoi (trigraph), the three letters "aoi"
Aoi-ku, Shizuoka, a ward of Shizuoka, Shizuoka Prefecture, Japan
