A Tiffany lamp is a type of lamp with a glass shade made with glass designed by Louis Comfort Tiffany and his design studio. The most famous was the stained leaded glass lamp. Tiffany lamps are considered part of the Art Nouveau movement.

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 leaded glass lamps even those not made by Louis Comfort Tiffany's company.