A fuel cell module includes a first fuel cell layer and second fuel cell layer. Each fuel cell layer includes a plurality of membrane electrode assemblies arranged in a planar shape. Each membrane electrode assembly includes an electrolyte membrane, an anode disposed on one surface of the electrolyte membrane, and a cathode disposed on the other surface of the electrolyte membrane. Each fuel cell layer also includes interconnectors each of which electrically connects the anode of one of adjacent membrane electrode assemblies to the cathode of the other. The first fuel cell layer and second fuel cell layer are arranged so that one polarity of each membrane electrode assembly of the first fuel cell layer is opposed to the same polarity of each membrane electrode assembly of the second fuel cell layer.