The , , is the Japanese version of a cloister, a covered corridor originally built around the most sacred area of a Buddhist temple, a zone which contained the Kondo and the pagoda. Nowadays it can be found also at Shinto shrines and at shinden-zukuri aristocratic residences.

Kairo may refer to:

• Kairo (band), Mexican boy band from 1993 to 1999 with Eduardo Verástegui as member until 1996
• Kairo (video game), independently published exploration video game made by Richard Perrin
• Kairo (film), aka Pulse, a 2001 Japanese film directed by Kiyoshi Kurosawa
• Kairo (Superman/Aquaman Hour), Green Lantern's sidekick in the 1967 cartoon
• Kairo-ko, a 1905 novel by Japanese author Natsume Soseki
• Kai-ro, a superhero in episodes of Batman Beyond and Justice League Unlimited cartoons (a future Green Lantern)
• Kairo, a cloister-like part of a Japanese Buddhist temple.
• Kairo is also a Japanese term for a hand warmer
• From Greek origin