Bhutan, as known by its ISO country code BT and internet domain .bt

BT Group, formerly known as British Telecommunications

Belfast, as known by its UK post code BT, also applies to the rest of Northern Ireland

Bluetooth, a wireless personal area network standard

BT (musician), stage name of electronica musician Brian Wayne Transeau

Billy Talent, a Canadian band from Ontario, sometimes abbreviated "BT"

Baronet, a title in the British honours system abbreviated Bt

Bacillus thuringiensis, a bacterium which forms Bt toxins

Binary tree, a data structure

Baseball Tonight, a baseball program on ESPN

BT tank, any of a series of Soviet military tanks

Breakfast Television, a Canadian morning television program also known as BT

Barton County, Kansas, as known by its state county code BT

AirBaltic, an airline with the IATA code BT

Bee Train, Japanese animation studio

Body thetan, part of Scientology doctrine

BT (.hack) a fictional character from the anime .hack//SIGN

Buck-Tick, a Japanese band

Blessed Trinity Catholic High School, a High School in Georgia

Bankers Trust, a banking organisation which operates as BT Financial Group in Australia

Banca Transilvania, a bank in Romania

BT Industries AB, a Swedish forklift manufacturer, owned by Toyota Industries Corporation

Bitstream Inc., a type foundry, as known by the abbreviation for their fonts

Bathythermograph, a device used to obtain a record of temperature against depth in the ocean

Bergens Tidende, a Norwegian newspaper

BT (Buck-Tick album), an album by Buck-Tick

Bulgartabac, a Bulgarian tobacco producer

Burton Taylor Theatre, known as The BT, in Oxford, United Kingdom

Baal teshuvah, a Jew who became Orthodox (female version: Ba'alat teshuvah)

Business Times, either of two newspapers published in Singapore and Malaysia

B.T. (tabloid), a Danish tabloid newspaper

Bodensee-Toggenburg-Bahn, a former Swiss railway company

BitTorrent, a peer-to-peer file sharing protocol

Borås Tidning, the newspaper of Borås, Sweden

Blacksburg Transit, the bus service of Blacksburg, Virginia