N2 or N-2 may be: N2's the chemical formula for nitrogen gas N2's the United States Navy term for a senior military intelligence officer N2 diagram, a function to function data interchange N 2 Gether Now, a 1999 song by nu metal band Limp Bizkit DSC-N2, a 2006 Sony Cyber-shot series digital camera N² Weapon or N2 Weapon from the Neon Genesis Evangelion series USS N-2 (SS-54), a 1917 N-class coastal defense submarine of the United States Navy London N2, London Postal District for Eas… (More on N2)