USCL
| Acronym | Definition |
|---|---|
| USCL | University of South Carolina Lancaster |
| USCL | US Chess Live |
| USCL | United States Chess League |
| USCL | United Society for Christian Literature |
| USCL | United States Coalition for Life (est. 1972) |
| USCL | Union Sportive des Cheminots Lyonnais (French: Sports Union of Lyonnais Railwaymen; Lyon, France) |
| USCL | United States Certified Letters (mail) |