Provided are a supported metal material showing high catalytic activity, a supported metal catalyst, a method of producing ammonia and a method of producing hydrogen using the supported metal catalyst, and a method of producing a cyanamide compound. The supported metal material of the present invention is a supported metal material in which a transition metal is supported on a support, and the support is a cyanamide compound represented by the following general formula (1); MCN.sub.2 (1), wherein M represents a group II element of the periodic table, and the specific surface area of the cyanamide compound is 1 m.sup.2g.sup.1 or more.