AJ

• Applejack (My Little Pony: Friendship Is Magic), a character from the fourth incarnation of My Little Pony
• A. J. (The Fairly OddParents), a fictional character
• A.J. Simon, a character in the American crime drama television series Simon & Simon
• A.J. Soprano, a fictional character in The Sopranos
• Superspinner AJ, a fictional character in the Starflyers series of computer games
• AJ, in AJ and the Queen, an American comedy-drama TV series
• Apollo Justice, a fictional character from Apollo Justice: Ace Attorney
• AJ, a character from Blaze and the Monster Machines

• Architects' Journal, an architectural magazine
• The Astronomical Journal, a peer-reviewed monthly scientific journal

• Aj (newspaper), a Hindi-language daily broadsheet newspaper in India

• Al Jazeera Arabic, a Qatar-based international Arabic news channel
• AJ+, an online news and current events channel
• AJ Capital Partners, an American private real estate company
• AJ's Fine Foods, an American supermarket chain
• AJ Institute of Engineering and Technology, in Mangalore, India

• Jaguar AJ-V8, a line of V8 engines manufactured by Jaguar

• AJ (given name), including a list of people with the name or nickname
• aJ, attojoule, a unit of energy equal to 10⁻¹⁸ joules
• Australian Scout Jamboree, a triennial festival
• North American AJ Savage, an aircraft
• Azerbaijan, WMO, FIPS, LOC MARC and obsolete NATO country code

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• {{lookfrom|aj}}
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• A&J (disambiguation)
• Ajay (disambiguation)
• AAJ (disambiguation)
• AJJ (disambiguation)
• "Aj, aj, aj", a 1973 song by Schytts

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