Molybdenum oxytetrachloride is the inorganic compound with the formula . This thermally unstable, dark green solid is used to prepare other complexes of molybdenum. Its molecule adopts a square pyramidal molecular geometry of C<sub>4v</sub> symmetry. As for other Mo(VI) compounds, it is diamagnetic. It decomposes thermally to .
It is prepared by treating molybdenum pentachloride with oxygen. It also arises by chlorination of molybdenum trioxide: