Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. It is essentially a modern version of letterpress which can be used for printing on almost any type of substrate, including plastic, metallic films, cellophane, and paper. It is widely used for printing on the non-porous substrates required for various types of food packaging (it is also well suited for printing large areas of solid colour).

Originally, flexographic printing was rudimentary in quality. Labels requiring high quality have generally been printed using the offsetprocess until recently. Since 1990, great advances have been made to the quality of flexographic printing presses, printing plates and printing inks.

The greatest advances in flexographic printing have been in the area of photopolymer printing plates, including improvements to the plate material and the method of plate creation.

Digital direct to plate systems have seen a good improvement in the industry recently. Companies like Asahi Photoproducts, AV Flexologic, DupontPlateCrafters, MacDermid, Kodak and Esko have pioneered the latest technologies, with advances in fast washout and the latest screening technology.