The concept of an actively deformable composite reflector is demonstrated and test verified. The objective of developing such a concept is to correct the low-order long-wavelength distortions in a space reflector. This is achieved by bonding a limited number of piezoelectric ceramic strips to the back face sheet of the reflector. A cryointerferometric test of a 0.5-m reflector with six groups of actuators was performed to verify the concept experimentally. Analysis of and test results for the development of an active deformable composite reflector panel are summarized.