SEPARATOR FOR FUEL CELL AND FUEL CELL STACK

A separator (100) for a fuel cell, which is stacked on a gas diffusion layer (200) provided on a membrane electrode assembly (MEA, 300), includes a plate body (110) stacked on the gas diffusion layer (200) and including a flow path part to define a reaction region to react with the membrane electrode assembly (300) and manifold parts spaced apart from the flow path part; through-holes (112) disposed in the plate body (110) to guide target fluids that have passed through the manifold parts to the flow path part; and hole caps (120) disposed on one surface of the plate body (110) that faces the gas diffusion layer (200) to at least partially cover the through-holes (112), the hole caps (120) defining movement paths (120a) through which the target fluids move.