To provide a window glass for a combustion apparatus that can sufficiently conceal an adhesive, a gasket, etc., for fixing the window glass to an apparatus body in the combustion apparatus and moreover can suppress the formation of cracks caused by heat in a light shielding layer regarding the window glass for the combustion apparatus, obtained by forming the light shielding layer containing inorganic pigment powder and glass powder, on the surface of a transparent crystallized glass plate.

A indow glass for a combustion apparatus is obtained by forming a light shielding layer containing inorganic pigment powder and glass powder, on the surface of a transparent crystallized glass plate. The light shielding layer contains 30-50 mass% inorganic pigment powder and 50-70 mass% glass powder. A film thickness is 1-10 μm, and an average particle diameter of the inorganic pigment powder is ≤0.8 μm.