- BT stands for (USN Rating) Boiler Technician
- BT stands for Baal T’Shuvah (Jewish religion)
- BT stands for Baby Talk (magazine)
- BT stands for Bacillus Thuringiensis
- BT stands for Back-Trajectory
- BT stands for Bacterial Translocation
- BT stands for Bad Taste (movie)
- BT stands for Bad Temperament (referring to pet personality)
- BT stands for Bad Trip
- BT stands for Baggage Tag
- BT stands for Baghdad Time (GMT+0200)
- BT stands for Baja Tensión (Spanish: Low Voltage)
- BT stands for Balance Transfer
- BT stands for Ballistic Tip
- BT stands for Ball-Turret Gunner
- BT stands for Bamboo Tree
- BT stands for Banco de los Trabajadores (Guatemalan bank)