LFI

LFI may refer to:

Organizations

 * 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

 * 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