BTL
BTL is an abbreviation for:
- Below-the-line , a technical term from marketing
- Bell Telephone Laboratories , now Bell Laboratories , part of Nokia's research and development division
- Bibliotheca Teubneriana Latina, book series of academic text editions
- Bridge-terminated load , an amplifier circuit, see bridge circuit #Applications
BtL stands for:
- Biomass to Liquid , process for the production of fuels from biomass, see BtL fuel
Btl stands for:
- Battalion , in the Bundeswehr
