Kaio or KAIO may refer to:

Fictional entities The Kaiō, gods of the fictional Dragon Ball universe The Kaiōshin, upper-level gods of the Dragon Ball universe Michiru Kaioh, a central character of the Sailor Moon meta-series Kaioh, a central antagonist in Fist of the North Star Kaio, a monster and star system in the 2009 RPG video game Spectrobes: Origins

People Chōgorō Kaionji (1901–1977), Japanese author noted for historical fiction novels Kaiō Hiroyuki (born 1972), sumo wrestler Kaio de Almeida (born 1984), Brazilian swimmer Kaio Felipe Gonçalves (born 1987), Brazilian footballer Kaio Mendes (born 1995), Brazilian footballer Kaio Jorge (born 2002), Brazilian footballer

Other uses KAIO (FM), a radio station (90.5 FM) licensed to serve Idaho Falls, Idaho, United States KWKK, a radio station (100.9 FM) licensed to serve Russellville, Arkansas, United States, which held the call sign KAIO-FM from 1984 to 1990 Atlantic Municipal Airport (ICAO code KAIO)

See also Kayo (disambiguation) Kajo (disambiguation)