Irrlicht may refer to:
* Irrlicht, the German name for
will-o'-the-wisp, the ghostly light sometimes seen at night over bogs and swamps
* "Irrlicht", the ninth song in the ''
Winterreise'' cycle by Franz Schubert
*
''Irrlicht'' (album), by Klaus Schulze
*
Irrlicht Engine, a 3D computer graphics engine
*
Die Irrlichter, a German mediaval/fantasy/folk band
*
''Irrlicht'' (film), a 1919 German silent film
{{disambiguation