K9

K9 or K-9 may refer to:

Animal

• K9, the nickname of police dogs

Fictional dogs

• K9 (Doctor Who), the name several robotic canines in the British science fiction television series Doctor Who
• K-9 (Looney Tunes), a dog in the Looney Tunes cartoon series
• K9 Murphy, a mechanical dog in the Japanese television series Tokusou Sentai Dekaranger

Computing

• AMD K9, a microprocessor
• K-9 Mail, a mail client for the Android operating system
• K9 Web Protection, a web content-control software
• K9Copy, a DVD backup and authoring program for Unix-like operating systems

Entertainment

• K-9 (film), a 1989 American film
• K-9 (TV series) a British/Australian comedy/adventure series starring the same character as featured in Doctor Who
• K9, a television station serving Boise, Idaho, now known as KNIN-TV
• Sonata in G for Keyboard and Violin, K. 9, a sonata by Wolfgang Amadeus Mozart

Military

• HMAS K9, an Australian submarine
• K-9 (missile), a Soviet short-range air-to-air missile
• K9 Thunder, a 155mm self-propelled artillery used by the Republic of Korea Armed Forces
• Kahr K9, a variant of the Kahr K series, a 9×19mm Parabellum semi-automatic pistol manufactured by the American company Kahr Arms
• Pusan East (K-9) Air Base, an abandoned air base in Busan, South Korea

Automotive

• Kia K9, a full-size luxury sedan
• K-9 (Kansas highway), a state highway in Kansas, US
• BYD K9, a battery electric bus

Other

• K9 glass, an inexpensive variety of crown glass
• K9, a children's shoe size

See also

• Canine (disambiguation)
• Kanine (disambiguation)