Cobalt(II) formate is an inorganic compound with the chemical formula Co(HCO2)2 (or Co(HCOO)2).

[2] It typically exists as a dihydrate (Co(HCO2)2•2H2O) in which it forms a 3D metal–organic framework structure and is known as Co-MOF.

[3] Cobalt(II) formate is a red crystalline solid and is soluble in water.

Cobalt formate is used to make catalysts for chemical manufacture[4] and for isolation of isotopically enriched hydrogen.

It can be prepared by adding Co(NO3)2 and phytic acid to a mixture of water, methanol, and dimethyl formamide.