Eday (disambiguation)

Eday or variants may refer to:


 * Eday, one of the islands of Orkney, Scotland
 * eDay, an electronic waste initiative in New Zealand
 * E-Day, a military designation of days and hours
 * El Día E ('E-Day'), Spanish Language Day
 * Flugplatz Strausberg, Germany, ICAO airport EDAY
 * Niño Martin Eday (born 1993), Filipino mountain biker