LFI may refer to:
Organizations
edit- Labour Friends of Israel, a lobby group within the British Labour Party
- League for the Fourth International, a Trotskyist international organisation
- Lycée Français d'Irlande, French international school in Dublin, Ireland
- La France Insoumise, a French political party
Other uses
edit- Limited Feedback Interaction, a recording technique used primarily in the creation of improvised music
- Local File Inclusion, a type of vulnerability most often found on websites
- Logkiy Frontovoi Istrebitel ("Light Frontline Fighter"), a fifth-generation Russian fighter aircraft project
- LFI, IATA airport code for Langley Air Force Base in Virginia
- Learning From Incidents