A process for producing a gas barrier article, the process comprising the steps of preparing a laminate, the laminate including, in the following order, a monomer-absorptive sheet, a polymerizable composition layer containing a gas barrier material, and a cover film, the monomer-absorptive sheet having a monomer-absorptive layer with a monomer-absorptive face, the polymerizable composition layer being present on the monomer-absorptive face of the monomer-absorptive sheet and including a polymerizable composition containing at least a polymerizable monomer and the gas barrier material, and the monomer-absorptive sheet being capable of absorbing the polymerizable monomer;
- allowing the gas barrier material to migrate within the polymerizable composition layer containing the gas barrier material to give a polymerizable composition layer containing the gas barrier material, in which the gas barrier material is unevenly distributed in the layer and enriched at an interface, or in the vicinity thereof, opposite to another interface with the monomer-absorptive layer;
- and carrying out polymerization of the polymerizable composition layer containing the unevenly distributed gas barrier material to form a polymer layer containing the gas barrier material being unevenly distributed in the layer and enriched at an interface, or in the vicinity thereof, opposite to another interface with the monomer-absorptive layer, to thereby yield a gas barrier article having a multilayer structure including the monomer-absorptive layer and the polymer layer containing the unevenly distributed gas barrier material.