| Acronym | Definition |
|---|
| CH | Confoederatio Helvetica (Swiss Confederation; Switzerland) |
| CH | Change |
| CH | China |
| CH | Chapter |
| CH | Child |
| CH | Channel |
| CH | Switzerland (country code, top level domain) |
| CH | Chief |
| CH | Church |
| CH | Chain |
| CH | Chemistry |
| CH | Champion |
| CH | Chemin (French: Path; Canada Post street designation) |
| CH | Chester (postcode, United Kingdom) |
| CH | Cultural Heritage |
| CH | Cholesterol |
| CH | Chorus |
| CH | Courthouse |
| CH | Clearinghouse |
| CH | City Hall |
| CH | Church History |
| CH | Chennai (Tamilnadu-India capital) |
| CH | Children's Hospital |
| CH | Centre Hospitalier (French: general hospital) |
| CH | Chaplain |
| CH | Coming Home |
| CH | Chinchilla (rabbit breed) |
| CH | Come Home |
| CH | Credit Hours |
| CH | Central Heating |
| CH | City Hunter (anime) |
| CH | Club House (UK maps) |
| CH | Carolina Herrera |
| CH | Ciudad de La Habana (postcode for Havana, Cuba) |
| CH | Chronic Hepatitis |
| CH | Critical Habitat |
| CH | Columbia House (record club) |
| CH | Peoples Republic of China (including Tibet) |
| CH | Customs House |
| CH | Carry Handle (firearms) |
| CH | Cluster Headache |
| CH | Cardboard Heroes (gaming) |
| CH | Carolina Hurricanes (NHL) |
| CH | Call Hold |
| CH | Common Hardware |
| CH | Cargo Helicopter |
| CH | Continuum Hypothesis |
| CH | Confoederatio Helvetica (Switzerland, international auto identification) |
| CH | Crack-Head |
| CH | Cargo Hold |
| CH | Covenant House |
| CH | Cerebral Hemisphere |
| CH | Center Hall (real estate) |
| CH | Control Head |
| CH | Chieti, Abruzzo (Italian province) |
| CH | Companion of Honour |
| CH | Crown Hill (cemetery) |
| CH | Conquering Hero |
| CH | Charity Hospital |
| CH | Cloud Height |
| CH | Chediak-Higashi Syndrome |
| CH | Christ's Hospital (Bluecoat School, UK) |
| CH | Critical Hours |
| CH | Contact Handled |
| CH | Compass Heading |
| CH | Clone High (cartoon) |
| CH | Controlled Humidity |
| CH | Component Handling |
| CH | Cascade Head |
| CH | Charging Handle (firearms) |
| CH | Communications House (light rail, Dallas, Texas) |
| CH | Crown-Heel (length of fetus) |
| CH | Crazy Hand |
| CH | Code Holder |
| CH | Clarion Health |
| CH | Correspondent Host |
| CH | Creature Handler (Star Wars Galaxies) |
| CH | Complete Heal (Everquest gaming) |
| CH | Chartered Herbalist |
| CH | contingency hospital (US DoD) |
| CH | Chairman/Chairperson |
| CH | Congenital Hyperthyroidism |
| CH | Casualty Handling (St John Smbulance, UK) |
| CH | Calico Hills |
| CH | Counting Heartbeats (band) |
| CH | Callitrichid Hepatitis |
| CH | Compare Halfword (IBM) |
| CH | Cochrane Hill |
| CH | Capital Height |
| CH | Clack House (Clay Aiken fan message board) |
| CH | Cossacks Heaven (gaming site) |
| CH | Clay High Plasticity (soil type) |
| CH | Constitution Heterogeneity |
| CH | Carrier/Hum Modulation |
| CH | Candle-Hour |
| CH | Coeficiente Honorário (Spanish: conorary coefficient, Brazil) |
| CH | Charriere Unit (French catheter scale) |