Abstract: A fluid-filled active damping apparatus having a pressure receiving chamber partially defined by a rubber elastic body connecting a first and second mounting member; an oscillation plate defining a part of the pressure receiving chamber, and supported in a displaceable fashion; an electromagnetic actuator disposed on one side of the oscillation plate remote from the pressure receiving chamber, with its output member connected to the oscillation plate; an equilibrium chamber partially defined by a flexible diaphragm; and an orifice passage connecting the pressure receiving chamber and equilibrium chamber. A rigid annular guide member is disposed about the oscillation plate with a slight gap therebetween, such that these members are mutually displaceable in the axial direction. The guide member is elastically supported by and connected to the second mounting member via an elastic support member.