IL-14 From Wikipedia the free encyclopedia IL-14 or IL 14 can refer to: Interleukin 14 Illinois's 14th congressional district Illinois Route 14 Ilyushin Il-14 - Soviet aircraft Topics referred to by the same termThis disambiguation page lists articles associated with the same title formed as a letter–number combination.If an internal link led you here, you may wish to change the link to point directly to the intended article.