What does TSU stand for?

Contract Air Cargo, Inc. - FAA designator (FAAC)

Tabiteuea South - Kiribati - Airport symbol (OAG)

Tandem Signal Unit - Telecommunications (TEL)

Tape Search Unit (CET)

Tariff Selection Unit (OA)

Tarleton State University - Formerly, TSC - Texas

Task-Specific Utility

Technical Service Unit

Technical Support Unit (IAA)

Telebriefing Switching Unit (SAUS)

Tele Celular Sul Partici ADS - NYSE symbol (SPSG)

Telecommunications Study Unit - American Topical Association - Defunct (EA)

Telephone Signal Unit - Telecommunications (TEL)

Telescope Sight Unit (MCD)

Telescopic Sight Unit (SAUS)

Tennessee State University, Nashville, TN - Library symbol - Library of Congress - OCLC symbol (LCLS)

Terminal Selector Unit (SAUS)

Terminal Service Unit (SAUS)

Terminating Signal Unit - Electronics (ECII)

Test Signal Unit - Telecommunications (TEL)

Texas Southern University

Thermal Structural Unit (SAUS)

Thermal Systems Unit (KSC)

Thermosetting Urethanes (SAUS)

This Side Up

Time Sharing User (SAUS)

Time Standard Unit

Tolstoi State University (SAUS)

TOW Sight Unit (SAUS)

Traffic Switching Unit (SAUS)

Trailer Support Unit (MLEX)

Training System Upgrade (ACAE)

Transfer Switch Unit (AAG)

Transportation System Utilization Program - Department of Energy

Transport Support Unit (SAUS)

Trans-Species Unlimited - Later, ARM (EA)

Treasury Support Unit (SAUS)

Triple Sugar-Urea Base - Agar - Microbiology

Trouble Shooting Utility (SAUS)

Trunk Selection Unit (SAUS)

Trunk Switching Unit (NITA)

Tsu - Japan - Seismograph station code, US Geological Survey (SEIS)

Tsumeb - South-West Africa - Geomagnetic observatory code

Tulsa-Sapulpa Union Railway - Intermodal shipping container symbol (TVRC)

Tulsa-Sapulpa Union Railway Co. - AAR code

Twin and Subtract (SAA)

Umbule - Language code (ETLW)