| item | description | category | filter | more on... |
| USRA | United Slot Racers Association | Radio Stations |
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| USRA | United States Racquetball Association | Radio Stations |
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| USRA | United States Railway Association | Other/Transportation |
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| USRA | United States Rimfire Association | Radio Stations |
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| USRA | Universities Space Research Association | Governmental/NASA |
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| USRA | Universities Space Research Association | Edu./Universities |
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| USRA | Universities Space Research Association | Governmental/Military |
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| USRA | Unlimited Scale Racing Association | Radio Stations |
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