IL

IL or Il may refer to:

Businesses and organizations

 * Image-Line, a Belgian software company
 * International League, Class Triple-A league in North American Minor League Baseball
 * Ilyushin, a Russian aircraft manufacturer, whose aircraft are designated with "IL"
 * Liberal Initiative, a political party in Portugal
 * Infinity Learn, Empowering Education, Illuminating Minds, Inspiring Learning, it is also stand for "IL"

Places

 * İl, the term for 'province' in Turkey, see Provinces of Turkey
 * Il, Iran, a village in Mazandaran Province, Iran
 * Israel (ISO 3166-1 alpha-2 country code IL)
 * Illinois (US postal abbreviation IL)
 * Ilmenau, Thuringia, Germany (former vehicle plate code; newer plates use IK for Ilm-Kreis)

Science and technology

 * Interlingua de Peano, a controlled language of Neo Latin used as an auxiliary language - not to be confused with Interlingua de IALA (IA), a constructed language

Biology, chemistry, and medicine

 * Interleukin, a family of cytokines, in biochemistry
 * Introgression line, in plant genetics
 * Infralimbic prefrontal cortex nucleus
 * Ionic liquid, in chemistry including pharmaceutics, and food science

Computing

 * .il, the Internet Top Level Domain (TLD) code for Israel
 * Internet Link protocol, developed originally as part of Plan 9 from Bell Labs
 * Insert Line (ANSI), an ANSI X3.64 escape sequence
 * Instruction list, an EC 61131-3 programming language
 * Intermediate language, in computer science
 * Common Intermediate Language, the compiled form of .NET code
 * Common Language Infrastructure, originally named Microsoft Intermediate Language

Sports

 * Injured list, a list of injured baseball players
 * Interleague play in Major League Baseball

Other uses

 * Il (Korean name), including a list of people with the name
 * Il (Shugo Chara!), a character from the manga series Shugo Chara! by Peach-Pit
 * International law
 * IL (album), a 2016 album of French-Canadian pianist and composer Jean-Michel Blais
 * Ugaritic spelling of the deity El
 * Il, king of Umma, a Sumerian king, circa 2400 BCE
 * IL, one way to write the Roman numeral for 49.
 * IL, an abbreviation for the Israeli pound, the first currency of Israel
 * Irish Language