TS
- ts – (s) Tsonga language (ISO 639-1 code)
- Ts – (s) Terasecond
- TS
- (s) Terasiemens
- Thunderstorm (METAR code)
- Tunisia (FIPS 10-4 country code)
- (i) TinySex
- Transsexual
- (i) "Tough Sh*t"
- TSA
- (i) Theatre Storage Area
- Time Slot Allocation
- Transportation Security Administration
- The Salvation Army
- TSCA – (a) Toxic Substances Control Act ("tosca")
- TSEC – (i) Transmission Security Encryption Code
- TSL – (i) Transportation Security Laboratory
- tsn – (s) Tswana language (ISO 639-2 code)
- TSN
- (i) The Sporting News (historic name of the periodical now known as Sporting News)
- The Sports Network
- tso – (s) Tsonga language (ISO 639-2 code)
- TSO
- (i) The Stationery Office (was HMSO until 1996)
- (U.S.) TRICARE Support Office
- (i) Trans-Siberian Orchestra (band)
- TSOP
- (i) Tactical Standing Operation Procedure
- The Sound of Philadelphia (classic 1970s R&B instrumental)
- TSR – many, including Terminate and Stay Resident; see entry
- TSSIA – (i) The Subject Says It All
Read more about this topic: List Of Acronyms And Initialisms: T