ECHS can mean:
- Ex-servicemen Contributory Health Scheme for retired armed forces personnel of India
- Extended cylinder-head-sector (extended cylinder-head-sector) block translation scheme for data storage
- Early College High School
- Early College High School (Salem, Oregon)
- East Clinton High School in Less Creek, Ohio
- East Catholic High School in Manchester, Connecticut
- Eastern Christian High School in North Haledon, New Jersey
- El Cerrito High School in El Cerrito, California
- Environmental Charter High School in Lawndale, California
- Eastside Catholic High School in Sammamish, Washington
- Escondido Charter High School in Escondido, California