Eil may refer to:
Places Eil (crater), on Mars Eil, Cologne, a quarter of Cologne, Germany Eil, Somalia Eil District, Somalia Loch Eil, a lake in Scotland
Other uses Eastern Independent League, an American high school sports conference Eielson Air Force Base, near Fairbanks, Alaska Energy input labeling Engineers India Limited English as an International Language Eurostar International Limited, European company, operating high-speed international rail services Experiment in International Living Electronic Information and Transactions Law in Indonesia Peter Eil (1917–1965), German soldier during World War II VR Class Eil, a Finnish railway coach