K9

K9 or K-9 may refer to:

Working dogs

• An abbreviation and homophone of canine, such as:
  • Police dog
  • Guard dog
  • Assistance dogs

Fictional dogs

• K-9 (Doctor Who), the name of several robotic canines in the long-running British science fiction television series, Doctor Who
• K9 Murphy, a mechanical dog in the Japanese television series Tokusou Sentai Dekaranger
• K-9 (Looney Tunes), Marvin the Martian's pet Martian dog in the Looney Tunes cartoon series from Warner Bros
• K-9 (Transformers)

Machinery

• HMAS K9, Australian submarine
• K9 Thunder, 155 mm self-propelled artillery used by the Republic of Korea Armed Forces
• Kia K9, Kia Motors' car
• AMD K9, microprocessors
• Kahr K9, a 9x19mm Parabellum semi-automatic pistol manufactured by the American company Kahr Arms

Other

• K-9 (film), starring James Belushi
• K-9 (Kansas highway), a state highway in the U.S. state of Kansas
• K9 Web Protection, Web content control software
• K-9 Mail, a mail client for the Android (operating system), also called k9 or k9mail
• K9Copy, a DVD backup and authoring program for Unix-like OSs (GNU/Linux and BSD)
• KNIN-TV, the CW affiliate in Boise, Idaho that was known as K9 in the late 1990s
• K-9 (missile), a long-range air-to-air missile developed by the Soviet Union in the late 1950s
• K-9 (TV series) a British/Australian comedy/adventure series starring the same character as featured in Doctor Who as listed above.
• K9 Cisco, a denotation of licensing and image files with AES/3DES features enabled

See also

• Canine (disambiguation)