Rhenium(VI) chloride is the inorganic compound with the formula ReCl<sub>6</sub>. It is a black paramagnetic solid. The molecules adopt an octahedral structure as seen in tungsten(VI) chloride.
Rhenium(VI) chloride was first generated as a mixture by chlorination of Re films. Bulk samples can be prepared by combining rhenium hexafluoride with excess boron trichloride:
It is unstable at room temperature with respect to rhenium(V) chloride: