A contactless power transfer apparatus comprising: one of a power transmission coil and a power reception coil opposing each other to perform contactless power transfer held in a case, wherein: the power transmission coil or the power reception coil held in the case includes a core (21; 22) and an electric wire, the core having magnetic pole portions at both ends and a wound portion core member around which the electric wire is wound between the magnetic pole portions, the electric wire being wound around the wound portion of the core; the magnetic pole portions of the core are formed from a pair of parallel magnetic members, the wound portion of the core is formed of a magnetic member which is perpendicular to the magnetic pole portions, and the core is formed in H-shape by the pair of magnetic members constituting the magnetic pole portions and the magnetic member constituting the wound portion core member; with reference to a position of a wide core surface of the wound portion core member, at a side opposing a counterpart coil, a height of a face of the magnetic pole portions opposing the counterpart coil of the core is equal to or greater than a height of an outer circumference of the electric wire wound around the wound portion core member, and at a side not opposing the counterpart coil, a height of a core face is less than the height of the outer circumference of the electric wire wound around the wound portion core member; and characterised in that the wound portion core member of the core (21; 22) is formed of a laminated body in which a plurality of amorphous magnetic alloy ribbons are laminated, the magnetic pole portions of the core are formed by a ferrite, a laminated face of the laminated body is parallel to a surface of the wound portion core member from one of the magnetic pole portions to the other one of the magnetic pole portions, and an end face of the wound portion core member at which the end faces of the ribbons appear abuts against the magnetic pole portions. the power transmission coil or the power reception coil held in the case includes a core (21; 22) and an electric wire, the core having magnetic pole portions at both ends and a wound portion core member around which the electric wire is wound between the magnetic pole portions, the electric wire being wound around the wound portion of the core; the magnetic pole portions of the core are formed from a pair of parallel magnetic members, the wound portion of the core is formed of a magnetic member which is perpendicular to the magnetic pole portions, and the core is formed in H-shape by the pair of magnetic members constituting the magnetic pole portions and the magnetic member constituting the wound portion core member; with reference to a position of a wide core surface of the wound portion core member, at a side opposing a counterpart coil, a height of a face of the magnetic pole portions opposing the counterpart coil of the core is equal to or greater than a height of an outer circumference of the electric wire wound around the wound portion core member, and at a side not opposing the counterpart coil, a height of a core face is less than the height of the outer circumference of the electric wire wound around the wound portion core member; and characterised in that the wound portion core member of the core (21; 22) is formed of a laminated body in which a plurality of amorphous magnetic alloy ribbons are laminated, the magnetic pole portions of the core are formed by a ferrite, a laminated face of the laminated body is parallel to a surface of the wound portion core member from one of the magnetic pole portions to the other one of the magnetic pole portions, and an end face of the wound portion core member at which the end faces of the ribbons appear abuts against the magnetic pole portions.