A contactless power transfer transformer for a moving body, comprising: a power transmission coil and a power reception coil, wherein the power reception coil is installed at a position at which the moving body is installed, contactless power transfer is performed when the moving body is moved to a power transfer position at which the power transmission coil and the power reception coil oppose each other, at least one of the power transmission coil and the power reception coil is configured by a coupled and both-sides wound coil (100, 200), the coupled and both-sides wound coil is configured by combining a plurality of single both-sides wound coils, a winding wire is wound around a wound portion between magnetic pole portions (41, 42) of a core in each of the single both-sides wound coils, in the coupled and both-sides wound coil, the single both-sides wound coils are combined so that each wound portion of the single both-sides wound coils is arranged linearly with respect to each other, one of the magnetic pole portions of one of the single both-sides wound coils is connected to one of the magnetic pole portions of adjacent one of the single both-sides wound coils, directions of magnetic fluxes in a vertical direction toward a corresponding coil from each of the magnetic pole portions connected to each other are identical, characterized in that the power transmission coil and the power reception coil are each configured by the coupled and both-sides wound coil that is configured by combining the two single both-sides wound coils (100, 200), in the coupled and both-sides wound coil of one of the power transmission coil and the power reception coil, winding wires of the two single both-sides wound coils are electrically connected to each other in series, and in the coupled and both-sides wound coil of the other one of the power transmission coil and the power reception coil, the winding wires of the two both-sides wound coils are electrically connected to each other in parallel. a power transmission coil and a power reception coil, wherein the power reception coil is installed at a position at which the moving body is installed, contactless power transfer is performed when the moving body is moved to a power transfer position at which the power transmission coil and the power reception coil oppose each other, at least one of the power transmission coil and the power reception coil is configured by a coupled and both-sides wound coil (100, 200), the coupled and both-sides wound coil is configured by combining a plurality of single both-sides wound coils, a winding wire is wound around a wound portion between magnetic pole portions (41, 42) of a core in each of the single both-sides wound coils, in the coupled and both-sides wound coil, the single both-sides wound coils are combined so that each wound portion of the single both-sides wound coils is arranged linearly with respect to each other, one of the magnetic pole portions of one of the single both-sides wound coils is connected to one of the magnetic pole portions of adjacent one of the single both-sides wound coils, directions of magnetic fluxes in a vertical direction toward a corresponding coil from each of the magnetic pole portions connected to each other are identical, characterized in that the power transmission coil and the power reception coil are each configured by the coupled and both-sides wound coil that is configured by combining the two single both-sides wound coils (100, 200), in the coupled and both-sides wound coil of one of the power transmission coil and the power reception coil, winding wires of the two single both-sides wound coils are electrically connected to each other in series, and in the coupled and both-sides wound coil of the other one of the power transmission coil and the power reception coil, the winding wires of the two both-sides wound coils are electrically connected to each other in parallel.