| Cambridge Healthtech Institute | Business |
| Corporate Healers, Incorporated | Business |
| Cylinder Head Innovations | Business |
| Corporate Healers Inc | Business |
| Claymore China Exchange Traded Fund (de-listed) | Business |
| Camillus House Inc | Business |
| Certified Home Inspector | Business |
| Certified House Inspector | Business |
| Cationic Hydration Interlink | Chemistry |
| The Church of Healers Independent | Community |
| Community Health Index | Community |
| Communication Heartful Interactive | Community |
| Committee for Health Improvement | Community |
| China History Info | Community |
| Community Health Institute | Community |
| Chicago Union Amtrak Station | Community |
| Catalogue Handling Interface | Computing |
| Computer Human Interaction | Computing |
| Compiled Help Interface | Computing |
| Cache Interface | Computing |
| Conference of Human Computer Interaction | Computing |
| Computer to Human Interaction | Computing |
| Concentration Highway Interface | Computing |
| Chi Gastoken | Cryptocurrency |
| Xaya | Cryptocurrency |
| Ceramic Heat Insulator | Electronics |
| Chiwriter Document | File Type |
| Coastal, Harbor, and Inland Waterway Boat | General |
| Children's Hospice International | General |
| Childrens Hope International | General |
| Cybernetic Hero Interdictor | General |
| Ceramic Hot Iron | General |
| Chicago Bears | General |
| Creatinine Height Index | General |
| Customer Happiness Index | General |
| Cheque House Interface | General |
| Ceramic Heating Iron | General |
| Cambridge Healthtech Inst | General |
| Chicago Assembly Plant | General |
| Construction Heaters Inc | General |
| Consolidated Health Initiative | Governmental |
| Commission for Health Improvement | Governmental |
| Consolidated Health Informatics Initiative | Governmental |
| Colorado Health Institute | Governmental |
| CHIPLUN | Indian Railway Station |
| Choice Hotels International | International |
| Closed Head Injury | Medical |
| Catholic Health Initiatives | Medical |
| Center For Health Improvement | Medical |
| Catastrophic Health Insurance | Medical |
| Caudate Head Index | Medical |
| Centre for Health Informatics | Medical |
| Clinical Health Informatics | Medical |
| Consumer Health Informatics | Medical |
| California Healthcare Institute | Medical |
| Catholic Health Intiatives | Medical |
| Child Helpline International | Medical |
| Computer Human Interface | Military and Defence |
| CHI Investments Limited[Amalgamated] | NSE Company Symbol |
| Chicago, Illinois USA (all area airports) | Regional |
| Close To Html Interface | Softwares |
