Iyo may refer to:

People Iyo Araki, Japanese nurse and nursing educator , Japanese pop idol , ring name of Japanese professional wrestler Iyo, legendary Japanese queen, also called Taiyoo

Places Iyo, Benin. a village in the commune of Bassila Iyo, Ehime, a city located in Ehime Prefecture Iyo District, Ehime, a district located in Ehime Prefecture Iyo Province, a province of Japan in the area of northwestern Shikoku Iyo-Matsuyama Domain, a feudal domain Iyo-Yoshida Domain

Other uses Iyo dialect, a dialect of Japanese spoken by people from Ehime Prefecture Iyo Bank Vertz, a Japanese women's softball team Iyotetsu, also called Iyo Railway Co., Ltd., the main transport provider in Matsuyama, Ehime, Shikoku, Japan Iyo language, New Guinea Iyo a character from Ani-Yoko