A cleaner includes a main body having an opening, a suction motor accommodated in the main body and configured to generate suction force, an opening cover separably coupled to the main body and configured to cover the opening, a motor housing configured to surround the suction motor, a flow guide disposed to surround at least a portion of the motor housing and spaced apart from the motor housing, and a filter mechanism disposed between the motor housing and the flow guide and including a filter member configured to filter dust contained in introduced air. The filter member is disposed to surround the motor housing, and the filter member includes a first filter unit and a second filter unit extends in a direction in which the first and second filter units cross each other.