Tin recycling refers to the collection of tin waste from daily life and industrial production. Recycled tin is a product obtained from the metallurgical process of recovered tin waste, including three types of waste: iron scrap, tin alloy scrap, and hot-dipped tin slag.

Tin content in iron scrap is low (0.5%~2%), with large quantities, as the annual consumption of tinplate reaches 18 million tons. There are many types of tin alloy scrap, including various bearing alloys, easily fusible alloys, solders (collectively known as lead-tin alloys), and tin brass scrap, etc., which generally contain more than 2%~5% tin and contain valuable recyclable components such as lead, copper, antimony, and zinc; hot-dipped tin slag has a high tin content but is in limited quantity.

Recycling tin is typically done industrially from the aforementioned waste materials. Tin recovered from waste containing tin is known as recycled tin, which differs from primary tin produced directly from ore. The quality of recycled tin is continually improving with the refinement of recycling methods, with electrolytic methods using additives currently being a relatively ideal recovery technique.