K9
Appearance
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