| Acronym | Definition |
|---|
| USIR➣University of Salford Institutional Repository (UK) |
| USIR➣United States Internal Revenue (watermark error; stamps) |
| USIR➣United States Inter-Regional (dance) |
| USIR➣Utah School Immunization Record (Utah Department of Health) |
| USIR➣Upper Silesian Industrial Region (Poland) |