CH
- ch – (s) Chamorro language (ISO 639-1 code)
- ch - ch(L) is used to denote the Chern character of a line bundle
- CH – (p) Chieftain tank – (s) China (FIPS 10-4 country code) – Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
- cha – (s) Chamorro language (ISO 639-2 code)
- CHAMPUS – (a) (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
- CHAOS – (a) Cambridge Heart Anti-Oxidant Study
- CHAPS - (a) Clearing House Automated Payment System
- CHDK - (i) Canon Hack Development Kit (Canon camera firmware hack)
- che – (s) Chechen language (ISO 639-2 code)
- CHE – (s) Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
- CHF – (s) Swiss franc (ISO 4217 currency code)
- CHI – (i) Columbia Helicopters, Inc
- CHI – (i) Computer-Human Interaction
- CHiP – (a) California Highway Patrol
- CHIPS – (a) Cosmic Hot Interstellar Plasma Spectrometer
- CHL – (s) Chile (ISO 3166 trigram)
- CHLA – (a) Core Historical Literature of Agriculture
- CHN – (s) China (ISO 3166 trigram)
- CHOGM – (a) Commonwealth Heads of Government Meeting
- CHP – (i) California Highway Patrol – Combined Heat and Power
- CHS – (i) Combat Health Support
- CHT – (i) Certified Hand Therapist
- chu – (s) Old Church Slavonic language (ISO 639-2 code)
- chv – (s) Chuvash language (ISO 639-2 code)
- CREN – (p) Christian Real Estate Network Real Estate Association
Read more about this topic: List Of Acronyms And Initialisms: C