3K

3K or 3-K may refer to:

• 3Kingdoms, a MUD, or text-based online role-playing game
• IATA airline designator for Jetstar Asia
• Ku Klux Klan
• 3K (Treći kanal RTS-a), a former channel of Radio Television of Serbia.
• 3K digital film resolutions, see List of common resolutions.
• Kinder, Küche, Kirche
• Kitanai, kiken, and kitsui (Dirty, Dangerous and Demeaning), a class of jobs
• 3000 (number)
• 3K, a Toyota K engine
• 3K Battery
• SSH 3K (WA), see Washington State Route 128
• 3K radiation, see Cosmic microwave background radiation
• PI-3K, see Phosphoinositide 3-kinase
• Python 3K, see Python (programming language)
• F6F-3K Hellcat, a model of Grumman F6F Hellcat
• Mystery Science Theater 3K, see Mystery Science Theater 3000
• 3k, track and field shorthand for 3000 metres
• EIF3K gene
• Jetstar Asia's IATA designator.