Potassium perrhenate is an inorganic compound with the chemical formula KReO4.

Potassium perrhenate can be produced by the neutralization of potassium hydroxide and perrhenic acid.

[2] Potassium perrhenate is a white solid that is sparingly soluble in water and ethanol.

It have a tetragonal crystal system with the space group I41/a (No.

[2] It is a strong oxidizer.