NASA Abbreviations and Acronyms
- UPLKUplink
- UPNUnique Project Number
- UPNUniversal Product Number
- UPPUser Parameter Processing
- UPPRUpper
- UPRUpper
- UPSUninterruptible Power Supply
- UPSUser Planning System
- UPSUninterruptable Power Source
- UPSUndergraduate Professional Study Program
- UPTLMUplink Telemetry
- URUrine
- URUnsatisfactory Report
- URAUrine Receptacle Assembly
- URNUrine
- URTUpright
- USUnited States of America
- USMicrosecond
- USUpper Stage
- USAUnited States of America
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