To obtain an organic-inorganic hybrid material capable of being subjected to molding processes, such as extrusion molding, injection molding and hot press molding, which have been impossible.

The thermoplastic organic-inorganic hybrid material which comprises a thermoplastic organic polymer and 1 to 80 wt.% of an inorganic component comprising a metal alkoxide or its related compound, or their hydrolytic polycondensation product, is characterized by having the thermoplastic property. It is desirable that all or a part of the hydrolytic polycondensation product is a polymetalloxane derivative or a polysylsesquioxane derivative.