J9, J09, J 9 or J-9 may refer to:

Military

Chengdu J-9 The Chengdu J-9 (Chinese: 歼-9) was an interceptor aircraft that was cancelled during development in the People's Republic of China (PRC). It was proposed in 1964 by the 601 Institute (Shenyang) as a higher-performing alternative to the Shenya ...

, a designation assigned to a 1975 Chinese interceptor aircraft that never progressed beyond initial studies * , a 1940 British Royal Navy *

Junkers J 9 The Junkers D.I (factory designation J 9) was a monoplane fighter aircraft produced in Germany late in World War I, significant for becoming the first all-metal fighter to enter service. The prototype, a private venture by Junkers named the J 7, ...

, a factory designation for the 1917 German Junkers D.I fighter aircraft * Seversky J9, a Swedish WW2 fighter plane'

Transport

* County Route J9 (California), a main route between the cities of Oakdale, Waterford, and Turlock * GS&WR Class J9, a

Great Southern and Western Railway The Great Southern and Western Railway (GS&WR) was an Irish gauge () railway company in Ireland from 1844 until 1924. The GS&WR grew by building lines and making a series of takeovers, until in the late 19th and early 20th centuries it was the ...

steam locomotive *

Guinee Airlines Guinee Airlines was an airline based in Guinea. It was founded in 1999 and ceased operations again in 2004. Code data Guinee Airlines operated its flight under *IATA Code: J9 *ICAO Code: GIF *Callsign: GUINEE AIRLINES Fleet Guinee Airlines opera ...

, a defunct airline of Guinea * Jazeera Airways, a Kuwaiti airline * Malaysia Federal Route J9, a major road in Johor, Malaysia * Peugeot J9, a fullsize van manufactured from 1981 to 2010

Other uses

* ''J9'' (album), a 2004 album by Jolin Tsai * J9 Series, a trilogy of Japanese anime robot series *

Elongated pentagonal pyramid In geometry, the elongated pentagonal pyramid is one of the Johnson solids (). As the name suggests, it can be constructed by elongating a pentagonal pyramid () by attaching a pentagonal prism to its base. Formulae The following formulae ...

(J₉), a Johnson solid * IBM J9, an implementation of Java * S/2000 J 9, now called Taygete, a retrograde irregular satellite of Jupiter * S/2001 J 9, now called Orthosie, a natural satellite of Jupiter *

S/2003 J 9 is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003. is about 1 kilometre in diameter, and orbits Jupiter at an average distance of in 767.6 ...

, a retrograde irregular satellite of Jupiter {{Letter-number combination disambiguation