Abstract: The present invention relates to a metal gasket for installation into a gap between a cylinder head and a cylinder block of a multi-cylinder engine by bolt fasteners. The gasket includes a base plate and a supplementary plate. The base plate has a plurality of combustion chamber openings, a plane plate portion surrounding each of the openings, and a convex cross-sectional shaped bead surrounding the plane plate portion and providing an inner and an outer sealing line on a concave side of the bead on the side of the opening and on the far side of the opening, respectively. The supplementary plate is overlapped with the concave side of the base plate and extended from a periphery of each opening to an area of the bead passing through the plane flange portion and the inner sealing line. The supplementary plate, however, is not extended to the outer sealing line. In this way, the supplementary plate forms a portion increased in thickness.