The present invention provides a sputtering target suitable for producing an amorphous transparent conductive film which can be formed without heating a substrate and without feeding water during the sputtering; which is easily crystallized by low-temperature annealing; and which has low resistivity after the crystallization. An oxide sintered compact containing an indium oxide as a main component, while containing tin as a first additive element, and one or more elements selected from germanium, nickel, manganese, and aluminum as a second additive element, with the content of tin which is the first additive element being 2-15 atom % relative to the total content of indium and tin, and the total content of the second additive element being 0.1-2 atom % relative to the total content of indium, tin and the second additive element.