LTF
LTF is the abbreviation for:
- Airworthiness requirement
- Lyon-Turin Ferroviaire , a railway company, see Mont Cenis Base Tunnel
- the type designation of some Suzuki 4-wheelers
- ICAO code for Air Taxi Airline
- Loyal to Familia , a criminal gang in Copenhagen
- long-term facilitation , term from neurophysiology - see long-term depression (LTD) and long-term potentiation (LTP)