Silver oxalate is a silver salt of oxalic acid with the chemical formula . It is sensitive to light, decomposing to metallic silver and carbon dioxide.
Silver oxalate is produced by the reaction between silver nitrate and oxalic acid, or from combining solutions of silver nitrate and sodium oxalate.
It is commonly employed in experimental petrology to add carbon dioxide () to experiments as it will break down to silver (Ag) and carbon dioxide under geologic conditions.
It is also a precursor to the production of silver nanoparticles.
It is explosive upon heating around and the dry material may explode when ground.