Tin scrap recycling refers to the collection of tin waste from daily life and industrial production, including 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.

Tin content in iron scrap is low (0.5% to 2%), with large quantities, as the annual consumption of tinplate reaches 18 million tons. There are many types of tin-containing scrap, including various bearing alloys, easily fusible alloys, solder (collectively known as lead-tin alloys), and tin bronze scrap, which generally contain 2% to 5% or more of tin, along with lead, copper, antimony, and zinc, all of which have recyclable value. Hot-dipped tin slag has a high tin content but is in limited quantity.

Recycling tin from the aforementioned waste is common in the industrial sector. 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 recovery methods, with electrolytic methods using oxidizers currently being a relatively ideal recovery technique.