A holding device for a motor, particularly for an electric fan wheel motor of a heating or air condition system of a motor vehicle, having an adapter which can be fixed on an exterior motor component and surrounds it at least partially on the circumference side, as well as having a motor holder connected with the adapter and having at least one vibration-uncoupling supporting element. According to the invention, primarily axially stressed supporting elements are provided between axially spaced parts of the adapter, on the one hand, and of the motor holder, on the other hand, or between the exterior motor component and a bottom surface of a cup-shaped adapter which can be fixed thereto, or such supporting elements which are mounted radially between motor holder fastening arms and adapter holding fingers, while being fastened on one part and engaging form-lockingly in receiving pockets on the other part. The holding device may be used, for example, for holding a fan motor of a motor vehicle air-conditioning system with a low vibration transmission and a reduced contribution to the noise development caused by the motor holder.