CMH
- CMH Records
- Cambridge Military Hospital
- Canadian Mountain Holidays
- Canadian Museum of History
- Central Middlesex Hospital
- Ceramic discharge metal-halide lamp
- Children's Memorial Hospital
- Children's Museum of Houston
- Cochran–Mantel–Haenszel statistics
- Cohen Modal Haplotype
- Combined Military Hospital
- Combined Military Hospital (Dhaka)
- Community mental health
- Consolidated Media Holdings
- Creatine monohydrate
- Cwmbach railway station
- John Glenn Columbus International Airport
- Medal of Honor
- United States Army Center of Military History