JF

JF could refer to:Jean-François, common French first nameJohn Frusciante, guitarist of the Red Hot Chili PeppersJF Duck, an aircraftJetairfly IATA airline designatorJunk foodL.A.B. Flying Service IATA airline designatorJF, a Mazda piston engineJust Frame, a term from the game Soul Calibur, referring to certain moves which must be entered within a specific frame window (ie with specific timing)Jardine Fleming
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Lost time due to job failure. If a job ( Test, Completion, Whipstock, etc. ) was run unsuccessfuly NOT due to Tools malfunction or damage or a hole problem, Operations' abbreviation which usually Companymans write in their daily drilling reports