Tin recycling refers to the collection of tin waste from daily life and industrial production, such as waste tin metal. Recycled tin is a product obtained from the metallurgical process of recovered tin waste, with three types of waste used to refine recycled tin: iron scrap, tin alloy scrap, and hot-dip tin slag.

Low tin content in iron scrap (0.5%~2%), in 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., generally containing 2%~5% or more of tin, and containing valuable recyclable components such as lead, copper, antimony, and zinc; hot-dipped tin slag has a high tin content but is in small quantities.

Recycling tin is typically done industrially from the aforementioned waste materials. Tin recovered from tin-containing waste is known as recycled tin, which differs from virgin 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.