The vibration and buckling behavior of hybrid composite plates with a general state of nonuniform initial stress in thermal environments are investigated. Governing equations including the effects of transverse shear deformation are established using the energy variation method. The initial stress is taken to be a combination of uniaxial extension and pure bending stresses. The temperature distribution in the hybrid plate is assumed to be a combined uniform and linear temperature change in the transverse direction. An example problem on an initially and thermally stressed laminated plate is solved. The effects of various parameters on the thermal induced vibration and stability of hybrid composite plates are studied. The natural frequency and buckling load are found to be sensitive to the thickness ratio of Al to CRFP layers, the state of initial stresses, and temperature rise.