II (disambiguation)

Not to be confused with LL (disambiguation).

Look up II in Wiktionary, the free dictionary.

II is the Roman numeral for two. This may also refer to:

Biology and medicine

Image intensifier, medical imaging equipment
Invariant chain, a polypeptide involved in the formation and transport of MHC class II protein
Optic nerve, the second cranial nerve

Ii is a Japanese surname, daimyo of Hikone:
- Ii clan, Japanese clan (Sengoku period)
- Ii Naomasa, one of four Guardians of the Tokugawa clan
- Ii Naoyuki, a Japanese author
John Papa ʻĪʻī, a Hawaiian noble

2 (number), in lowercase Roman numerals
ii (digraph), a digraph in certain romanized alphabets
ii (IRC client), short for IRC It, an Internet Relay Chat client for Unix-like operating systems
Ii, Finland, a municipality of Finland
Illegal immigrant (especially in Hong Kong vernacular)
Institutional Investor Magazine, an American magazine
Income inequality, or the wealth gap, in economics
Index Islamicus, a bibliography database of publications about Islam and the Muslim world
Internet Infidels, a discussion forum
Internationalization Index, used by the UN to rank nations and companies in evaluating their degree of integration with the world economy
Yi language (ISO 639 alpha-2 code ii)