| Acronym | Definition |
|---|
| SACO | Sveriges Akademikers Centralorganisation (Swedish Confederation of Professional Associations, Stockholm, Sweden) |
| SACO | Select Address and Contract Operate |
| SACO | Swedish Confederation of Professional Associations |
| SACO | Subject Authority Cooperative Program (Library of Congress) |
| SACO | Service d’Assistance Canadienne aux Organismes |
| SACO | Sino-American Cooperative Organization |
| SACO | South African Computer Olympiad |
| SACO | Substance Abuse Control Officer (United States Marine Corps) |
| SACO | Slavic American Cultural Organization (Watsonville, CA) |
| SACO | Seattle Aircraft Certification Office (US FAA) |
| SACO | St. Augustine Chamber Orchestra (St. Augustine, Trinidad and Tobago) |
| SACO | Standing Airspace Coordination Order |
| SACO | US-Japan Special Action Committee on Okinawa |
| SACO | Staff Actions Control Officer |
| SACO | Shanghai Airports-Council Office |
| SACO | Supreme Allied Commander Operations |
| SACO | Saint Augustine Community Orchestra (St. Augustine, FL) |