What does USO stand for?

Udaipur Solar Observatory - India

Ultra Stable Oscillator - Instrumentation

Ultra-Steerable Oscillator (SAUS)

Under Secretary of the Navy's Office

Unidentified Submarine Object

Unidentified Superconducting Object

Unilateral Salpingo-Oophorectomy - Gynecology (MAE)

United Service Organization

United Service Organizations, Inc. (EA)

United Services Organization - A private, nonprofit organization (MLEX)

United Siscoe Mines, Inc. - Toronto Stock Exchange symbol

United States Outfitters

United States Overseas - Facetious translation of United Services Organization (VNW)

Unit Security Officer (AAG)

Universal Service Obligation (SAUS)

Universal Service Order - Bell System (TEL)

UNIX Software Operation (SAUS)

Unmanned Seismic Observatory (SAUS)

Unmanned Seismological Observatory

Unseptoctium - Chemical element (EPT)

US 1 Indus - NYSE symbol

US Office-UTLAS Corp. (SAUS)

US One Industries, Inc. - Formerly, Transcom, Inc. - NYSE symbol (SAG)

US Ordnance - NCIC firearms make code (NCIC)