Provided is a fuel cell including: a membrane electrode assembly (30) formed by joining an anode (32) to one surface of an electrolyte membrane (31) and joining a cathode (33) to another surface of the electrolyte membrane (31); a frame body (20) formed integrally with the membrane electrode assembly (30); and a pair of separators (40, 41) holding the membrane electrode assembly (30) and the frame body (20) therebetween. At least one pair of holding pieces (42, 43) holding the membrane electrode assembly (30) therebetween is formed in the pair of separators (40, 41). Positions of holding end portions (42a, 43a) of the pair of holding pieces (42, 43) are shifted from each other in a stacking direction of the fuel cell.