I2

i2, I-2, I 2 or I2 may refer to:
* I₂, the chemical symbol for molecular iodine
* I2 Aquarii in astronomy
* I2 engine, a designation for a flat-twin engine
* i 2 (EYE), a 1988 Michael W. Smith album
* i2 Limited, a visual investigative analysis software company.
* i2 Mobile, a mobile distributer in the Middle East and Africa [http://www.i2-mobile.com/]
* i2 Technologies, an international supply chain management firm
* I2, the human Y-chromosomal Haplogroup
* HIJMS I-2, a WWII Imperial Japanese Navy J1 type submarine
* LB&SCR I2 class, a 1907 British class of 4-4-2 steam tank locomotiveand also :
* Internet2
* I 2, a Swedish regimental designation for :
** Göta livgarde (1816–1939)
** Värmlands regemente (1939–1973)