A Tiffany lamp is a type of lamp made of glass and shade designed by Louis Comfort Tiffany or artisans, mostly women, and made (in originals) in his design studio. The glass in the lampshades is put together with the copper-foil technique instead of leaded, the classic technique for stained-glass windows. Tiffany lamps are considered part of the Art Nouveau movement. Considerable numbers of designs were produced from 1893 onwards.
Due to Tiffany's dominant influence on the style, the term Tiffany lamp or Tiffany-style lamp has been often used to refer to stained-glass, leaded lamps, even those not made by Tiffany Studios.