Eternal Light or eternal light may refer to

• Sanctuary lamp, shines before the altar of religious sanctuaries
• The Eternal Light, 1944–89 NBC radio program on Jewish themes
• Eternal Light (video game), formerly titled Witches, combat game developed by Revistronic, cancelled in 2011
• Eternal light mushroom (Mycena luxaeterna) bioluminescent fungus
• Eternal Light Flagstaff, 1923 monumental flagstaff in Madison Square, Manhattan, New York
• Eternal Light Peace Memorial, 1938 Gettysburg Battlefield monument
• Palace Theater Light, an incandescent light bulb in Fort Worth, Texas, continuously operating since 1908

• Lux Aeterna (disambiguation) (from the Latin for "eternal light")
• Forugh-e Javidan (disambiguation) (from the Persian for "eternal light")
• Amar Deep (disambiguation) (from the Sanskrit for "eternal light/lamp")
• Peak of eternal light, point on a body within the Solar System which is always in sunlight
• Eternal flame (disambiguation)
• There Is a Light That Never Goes Out, song by The Smiths