IL

As an abbreviation, IL may refer to:

• Israel, as ISO 3166-1 alpha-2 country code
• Lankair, an airline, as IATA designator
• Internet Link protocol, developed originally as part of Plan 9 from Bell Labs
• Illinois, as United States postal abbreviation
• Ilmenau, a town in Thuringia, in German former vehicle registration plates (newer plates show IK for Ilm-Kreis)
• Image-Line
• International League, Class Triple-A league in North American Minor League Baseball
• Instruction list, an IEC 61131-3 programming language
• Common Intermediate Language, the compiled form of .NET code
• Common Language Infrastructure, originally named Microsoft Intermediate Language

the following singular IL abbreviations may have as plural ILs:

• Interleukin, a family of cytokines, in biochemistry
• Intermediate language, usually the Common Intermediate Language (CIL), in computer science
• Introgression line, in plant genetics
• Ionic liquid, in chemistry including pharmaceutics, food science
• infralimbic prefrontal cortex nucleus
• aircraft made or designed by Ilyushin, a Russian design bureau and aircraft manufacturer

il may also be:

• the third-person singular masculine personal pronoun he, or the expletive pronoun it (as in 'it rains', il pleut), in French language
• one of the masculine definite articles in Italian language
• the term for 'province' in Turkey, see Provinces of Turkey
• .il, the Internet Top Level Domain (TLD) code for Israel
• Il (Shugo Chara!), a character from the manga series Shugo Chara! by Peach-Pit