Canfieldite is a rare silver tin sulfide mineral with formula: Ag8SnS6.

There is a complete series between canfieldite and its germanium analogue, argyrodite.

The most typical form is as botryoidal rounded grape-like masses.

Canfieldite was first described in 1893 from an occurrence in Colquechaca, Potosí Department, Bolivia.

It was named for Frederick Alexander Canfield (1849–1926), an American mining engineer.