A fuel cell includes: a membrane electrode assembly provided with an electrolyte membrane and gas diffusion electrodes attached to both sides of the electrolyte membrane; separators supporting the membrane electrode assembly from both sides thereof; a gas flow path forming member disposed between the separator and the gas diffusion electrode to form gas flow path for supplying reactant gas for power generation in the fuel cell to the gas diffusion electrode; and an elastic member disposed between the separator and the gas flow path forming member and having an elastic modulus which is higher than that of the gas flow path forming member.