title: IL-20
text: # IL-20
  
  IL-20 or IL 20 may refer to:
  
  * Interleukin 20, a protein in humans
  * Illinois's 20th congressional district, an obsolete district
  * Illinois Route 20
  * Ilyushin Il-20 (1948), a prototype Soviet ground attack aircraft
  * Ilyushin Il-20M, a military variant of the Soviet-era Il-18 turboprop aircraft
  