J9

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

• J9 (album), a 2004 album by Jolin Tsai
• J9 Series, a trilogy of Japanese anime robot series; Braiger, Baxinger and Sasuraiger. All animated by Kokusai Eiga-sha, between 1981-1984.
• Chengdu J-9, a designation assigned to a 1975 Chinese interceptor aircraft that never progressed beyond initial studies
• 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 Irish steam locomotive
• HMS Cromarty (J09), a 1940 British Royal Navy Bangor class minesweeper
• IBM J9, an implementation of Java
• Joyrex J9, two distinct vinyl albums by Caustic Window
• Junkers J 9, a factory designation for the 1917 German Junkers D.I fighter aircraft
• Malaysia Federal Route J9, a major road in Johor, Malaysia
• S/2000 J 9, a former name for Taygete, a retrograde irregular satellite of Jupiter
• S/2001 J 9, a former name for Orthosie, a natural satellite of Jupiter
• S/2003 J 9, a retrograde irregular satellite of Jupiter

and also :

• J9 : Jazeera Airways IATA airline code (as well as for defunct Guinee Airlines)
• J09 : Influenza due to identified avian influenza virus ICD-10 code
• J9: [Nickname in place of the female first name Janine] By combining the phonics sound that J makes (Ja) and the word nine written together you derive the name Janine; in this case it would be pronounced (Jay)-(Nine); J9. A nickname. Other variants and sub-variants of this name later morphed into Jay9, Jaynarn, Janarn, Janarnia.