1K or 1-K may refer to:

• Astra 1K satellite
• Astra 1KR satellite
• 1K ZX Chess computer program
• Southern Cross Distribution's IATA code
• Sutra (air company)'s IATA code
• BMP-1K, see BMP-1
• BRM-1K, see BMP-1 variants
• HH-1K, see Bell UH-1 Iroquois variants
• XMODEM-1K, a model of XMODEM
• YMODEM-1K, a model of YMODEM
• GSXR 1K, or Suzuki GSX-R1000
• Typ 1K, a model of Volkswagen Golf Mk5
• SSH 1K (WA), see Washington State Route 509
• Premier 1K, a membership level of United Airlines MileagePlus program
• 1k as one thousand

See also

• Lelvin
• Kilobyte
• K1 (disambiguation)

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