- K
- K or KB
- KAB
- kangaroo code
- kangaroo parent
- Karen
- KB
- KBD
- Kbps
- KC
- KCCO
- keeping it 100
- keiretsu
- keitai
- Kermit
- kernel
- kevork
- kewl
- key
- key pal
- key ring
- keyboard
- keyboard plaque
- keyboard trauma
- keylogger
- keyword
- keyword density
- KFB
- KFY -or- K4Y
- KHYF
- KIA
- KIBO
- kickback marketing
- kid sibling management
- Kids and Cabernet
- KIF
- kill file
- kill switch
- kilo-
- kilobyte
- kiosk
- KIPPERS
- KIR
- KISS
- KIT
- kitten
- kittenfish
- kitty
- KITY
- KK
- KKK
- kluge or kludge
- KM
- KMA
- KMBA
- KMFHA
- KMIM
- KMP
- KMRIA
- KMS
- KMSLA
- KMUF
- KMWA
- knowbots
- knowledge retrieval
- knowledge worker
- KO
- koan
- Kobrigram
- kodak courage
- KOK
- Konqueror
- KOSA
- KOTC
- KOTL
- KPC
- KPI
- KS
- Kthxbye
- kubris
- kudt
- KUTGW
- KWIM
- KWSTA
- KYBC
- KYFC
- KYNC
- KYPO
- KYR
- KYS
- KYSOTI
