| Acronym | Definition |
|---|
| USAC➣United States Auto Club |
| USAC➣Universidad de San Carlos (University of San Carlos, Guatemala) |
| USAC➣Universal Service Administrative Company |
| USAC➣Undergraduate Students Association Council (University of California, Los Angeles) |
| USAC➣University Studies Abroad Consortium (various schools) |
| USAC➣US Airways Center (Phoenix, Arizona) |
| USAC➣United States Army Corps |
| USAC➣University Sub-Aqua Club (Jamaica) |
| USAC➣United States Atlantic Coast |
| USAC➣Utrechtsche Studenten Alpenclub (Utrecht, Netherlands) |
| USAC➣United States Auto-Sound Challenge |
| USAC➣United Seniors of Athens County, Inc. (Ohio) |
| USAC➣United States Army Cadet Corps |
| USAC➣United States Alpine Club |
| USAC➣United States of America Cycling (Colorado Springs, CO) |