LFT may refer to:
- Lafayette, Louisiana (Amtrak station), United States; Amtrak station code LFT
- Lafayette Regional Airport, Louisiana in the USA.
- Layer four traceroute, a utility to analyze computer networks
- Legacy Family Tree, a genealogy software
- Ligand Field Theory
- Liver function tests, a particular battery of laboratory blood tests
- Luyten Five-Tenths catalogue, a star catalogue
- Lycée Français de Toronto, a high school in Toronto that teaches the French government curriculum
- Linear fractional transform, a conformal mapping of the Riemann sphere