Nickel tetrafluoride is an inorganic compound with a chemical formula .
Nickel tetrafluoride is claimed to result from the reaction of (pentafluoroxenonium(IV) hexafluoronickelate(IV)) with and with .
Nickel tetrafluoride is an extremely strong oxidizer. The oxidizing properties are enhanced in presence of Lewis acids in anhydrous HF. In terms of oxidizing power, it is comparable to krypton difluoride. It can oxidize bromine pentafluoride to hexafluorobromonium(VII) cation , potassium hexafluoroplatinate(V) to platinum(VI) fluoride .