LAJ

LAJ may refer to:


 * British Mediterranean Airways; ICAO airline code LAJ
 * La Junta (Amtrak station), Colorado, United States; Amtrak station code LAJ
 * Lages Airport, Santa Catarina, Brazil; IATA airport code LAJ
 * Lango language (Uganda), ISO 639-3 language code LAJ
 * Libyan Arab Jamahiriya
 * Los Angeles Junction Railway