IL
- .il
- 49 (number)
- Common Intermediate Language
- Common Language Infrastructure
- El (deity)
- IL Protocol
- ISO 3166-1 alpha-2
- Il (Korean name)
- Il (Shugo Chara!)
- Il (album)
- Il, Iran
- Il, king of Umma
- Illinois
- Ilmenau
- Ilyushin
- Image-Line
- Injured list
- Insert Line (ANSI)
- Instruction list
- Interleague play
- Interleukin
- Interlingua de Peano
- Intermediate language
- International League
- International law
- Introgression line
- Ionic liquid
- Irish Language
- Israel
- Israeli pound
- Liberal Initiative (Portugal)
- Northern Ireland Football League
- Provinces of Turkey
- Roman numeral
- Sushma Bopanna
- Trigana Air