To provide a metal sheet for a battery container which employs a rolled metal sheet and with which it is possible to suppress cracking of a base material and peeling of resin even if a deep drawing process employing a small corner portion radius is used, and to provide a method of manufacturing said metal sheet for a battery container. This metal sheet for a battery container is a metal sheet thatis used for a battery container and that comprises iron or an alloy of iron, characterized in that the thickness of the metal sheet is 10 to 100 [mu]m, the tensile strength of the metal sheet is 300to 700 MPa, the elongation of the metal sheet is 5 to 35%, and the ratio between the grain size of the metal sheet in the planar direction and the thickness direction is 0.8 to 8.