Kairi can mean several things:

• Kairi, a character from the Kingdom Hearts series of video games
• Kairi (Street Fighter), a character from the Street Fighter series of video games
• Trinidad was formerly known as Kairi; see Trinidad and Tobago
• Kairi, Queensland, a small town in Far North Queensland, Australia
• Kairi (Batman), a minor character who appeared in Batman: The Animated Series and Batman Beyond.
• Kairi Sanjo, a fictional character from the manga series Shugo Chara! by Peach-Pit
• Kairi, the moon, a month in the Taino language
• Kairi, a fictional character from the manga series "Warriors"