LBJ may refer to:

• Lyndon Baines Johnson, thirty-sixth President of the United States
• Lady Bird Johnson, wife of Lyndon Baines Johnson and former First Lady of the United States
• LBJ School of Public Affairs, a public affairs graduate school at the University of Texas
• LeBron James, an American basketball player
• Komodo Airport, an airport in Labuan Bajo, Indonesia (IATA airport code LBJ)
• Lake Lyndon B. Johnson, a lake in Texas
• Lyndon B. Johnson Freeway, an Interstate freeway in Texas
• Lyndon B. Johnson National Grassland in Texas
• "Little Brown Job", birder slang for a warbler
• Little Brown Jug
• Little Black Jumper/Little Blue Jumper, an electrical jumper commonly used in computer equipment
• A recreational drug with a mixture of LSD, Atropa belladonna and heroin
• Lyndon B. Johnson Tropical Medical Center, a hospital in American Samoa
• Light bulb joke, a type of joke.

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