E is a service on the S-train network in Copenhagen. It runs between Køge and Holte, serving the outer end of the Køge radial and the inner part of the Hillerød radial. The A service serves the complementary parts of each radial, and both lines serves all stations on the central part between Ny Ellebjerg and Hellerup.
Trains run on weekdays only, every 20 minutes from about 5:00 to 6:00 and every 10 minutes about 6:00 to 20:00.