KIB, Kib, or KiB may refer to:

• Kazak Engineering Society (Kazak Injenerler Birlestigi, Қазақ Инженерлер Бірлестігі)
• Kib (Jaredite king), one of the Jaredite kings in the Book of Mormon
• Kibibit (Kib)
• Kibibyte (KiB)
• Kodiak Island Borough, Alaska, a borough in the U.S. state of Alaska
• Kunming Institute of Botany

The kibibyte is a multiple of the unit byte for quantities of digital information. The binary prefix kibi means 2¹⁰, or 1024, therefore a 1 kibibyte is 1024 bytes. The unit symbol for the kibibyte is KiB.