USN (disambiguation)

Look up USN in Wiktionary, the free dictionary.

USN may refer to:

• United States Navy
• University of Southern Nevada
• University School of Nashville
• IATA Code for Ulsan Airport in Ulsan, South Korea
• Ubiquitous Sensor Network
• USN (Update Sequence Number) Journal, a part of the NTFS file system
• United States dollar (next day) (funds code)
• Universal Space Network, a company providing space communication services
• Ultimate Sports Nutrition, a company who sell sports supplements and nutritional products