  We show that quantum mechanical supersymmetries are emerged in Kaluza-Klein
spectrum of linearized gravity in several warped backgrounds as a consequence
of higher-dimensional general coordinate invariance. These emergent
supersymmetries play an essential role for the spectral structure of braneworld
gravity. We show that for the case of braneworld models with two codimension-1
branes the spectral pattern is completely determined only through the
supersymmetries.
