A BLT is a sandwich with bacon, lettuce and tomato.

BLT may also refer to:

Art, entertainment, and media

• B.L.T. (album), by Jack Bruce, Bill Lordan and Robin Trower
• Beautiful Lady & Television, a monthly magazine in Japan
• Brian Lester "BLT" Thomas, a character in the Degrassi High television series
• Bolek Lolek and Tola

Businesses

• Baselland Transport, a Swiss bus and tram operator
• BHP, an Australian mining multinational (LSE stock symbol: BLT)
  • Blackwater Airport, a BHP-owned aerodrome in Queensland (IATA code: BLT)

Science, technology and mathematics

• Basic Linguistic Theory, a linguistic typology framework
• Bit blit, a computer graphics method
• BLT theorem, in mathematical analysis

Other uses

• Bhagwa Love Trap conspiracy theory, an anti-Hindu conspiracy theory
• Battalion landing team of the U.S. Marines
• Bear-Lion-Tiger, a trio of animals that formed a juvenile bond at Noah's Ark Animal Sanctuary