E2, e2, E02, E.II, e² or E-2 may refer to.
Edward II (known also as EII, and previously as Edward the Second and the Red Hot Polkas and e2K) are an English band which play a fusion of world music, English folk and reggae.
Edward II (25 April 1284 – 21 September 1327), also called Edward of Carnarvon, was King of England from 1307 until he was deposed in January 1327.
Elizabeth II (Elizabeth Alexandra Mary; born 21 April 1926) is Queen of the United Kingdom and the other Commonwealth realms.
Enterprise information integration (EII) is the ability to support a unified view of data and information for an entire organization.
Socionics, in psychology and sociology, is a theory of information processing and personality type, distinguished by its information model of the psyche (called "Model A") and a model of interpersonal relations.