// Workers AI · dad joke modeWhat did IL-1 say to IL-2? "You're one after me.
IL1 or IL-1 may refer to:
- Interleukin 1, a protein
- Illinois's 1st congressional district
- Illinois Route 1
- IL1, Building 1 of Infinite Loop (street), the headquarters of Apple Inc.
- Orenco IL-1, 1921 American two-seat liaison biplane
- Ilyushin Il-1, a 1944 Soviet fighter prototype
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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