Foil stamping, typically a commercial printing process, is the application of metallic or pigmented foil on to a solid surface by application of a heated die onto foil, making it permanently adhere to the surface below leaving the design of the die.
In the process known as hot foil stamping, foil stamping machines uses heat to transfer metallic foil to a solid surface. Examples of items that are foil stamped include annual reports, pocket folders, product packaging, note cards/thank you cards, business cards, envelopes and letterhead. The foil stamp is a permanent process.
There are two primary types of foil stamping machines. The first type is manual and the second is pneumatic (air powered), which typically used in a commercial print shop. Manual foil stampers are ideal for low jobs and the pneumatic is ideal for medium to high-volume jobs.
Commercial Foil Stamping is usually produced on a Kluge foil stamp press or a Heidelberg Windmill retro fitted for foil stamping. 
Foils come in a wide selection of colors and finishes, from traditional metallic gold and silver, to metallic and matte foils in every color of the rainbow. Metallic foils are the most widely used stamping foils, because they add a brilliant, eye-catching shine. Holographic foils, which add a remarkable shimmer, are also available to help enhance the look of your printed packaging, and foils with pearl effects can add an elegant, pearl-like sheen to your printed piece. 
Foil stampers do create a lot of heat in order to transfer the foil to the surface of an object. Safety must be observed when changing type sets to prevent one from being burned.
- "Types of Foil Stampers". Retrieved 2009-06-30.
- "Kluge Foil Stamp Press - Corcoran Printing". Retrieved 2009-06-30.
- "Foil Stamping can help your product-packaging and other materials stand out - Corcoran Printing".