Die casting is a metal casting process characterized by the use of a mold cavity to apply high pressure to melted metal. Molds are usually machined with higher strength alloys, in a process somewhat similar to injection molding. Most die casting castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys.

Depending on the type of die casting, either a cold chamber die casting machine or a hot chamber die casting machine is required. The cost of casting equipment and molds is high, so the die casting process is generally only used to mass-produce a large number of products.