KI
- ki – (s) Gikuyu language (ISO 639-1 code)
- Ki – (s) Kibi
- KI – (s) Kiribati (ISO 3166 digram)
- KIA – (i) Killed In Action
- KIDS – (a) Knowledge-based Integrated Design System
- kik – (s) Gikuyu language (ISO 639-2 code), common typo for LOL
- kin – (s) Kinyarwanda language (ISO 639-2 code)
- kir – (s) Kyrgyz language (ISO 639-2 code)
- KIR – (s) Kiribati (ISO 3166 trigram)
- KISS – (a) Keep It Simple, Stupid / Keep It Short and Simple – Korean Intelligence Support System
- KITECH – (p) Korean Institute of Industrial Technology
- KITT – (a) Knight Industries Two Thousand - Knight Industries Three Thousand
- KIT – Keep In Touch
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