G9

G9, G.IX, G09 or G-9 has several uses including:

• Group of Nine, a group of nine European states
• G9 (consortium), a name for a group of nine Australian internet providers
• G9 (album), the debut album of Gloc-9
• G9, a bipin lamp standard
• G9 star, a subclass of G-class stars
• Canon PowerShot G9, a digital camera
• County Route G9 (California)
• Gotha G.IX, a 1918 German bomber aircraft
• HMS G9, a British G class submarine and one of eight British submarines lost to "friendly fire" in World War I
• HMS Quilliam (G09), a 1941 British Royal Navy Q class destroyer
• G9, in internet slang, means "Good night"

and also :

• Air Arabia, IATA airline designator
• Gaia Online, donation item
• Gol Transportes Aéreos (Brazil), IATA airline designator
• Group 9 element of the periodic table
• G09, Sequelae of inflammatory diseases of central nervous system ICD-10 code
• Nachtjagdgeschwader 1, from its historic Geschwaderkennung code with the Luftwaffe in World War II