Molding mold, resin molding device, and production method for resin molded article

The present invention provides a molding mold that can prevent molding defects and mold-release defects in resin molded articles. A molding mold according to the present invention comprises one mold and another mold that is opposite the one mold and has a cavity that is provided with a mold-release film. The other mold comprises a principal surface member that forms a principal surface of the cavity and a side surface member that forms a side surface of the cavity. An opposing surface of the side surface member that is opposite the first mold has a mold-release film suction hole that suctions the mold-release film and includes a plurality of first suction holes and second suction holes that link adjacent first suction holes. At the opposing surface, the first suction holes are longer than the second suction holes in the direction orthogonal to the direction in which the second suction holes extend to link adjacent first suction holes.