Rebirth in Buddhism is the doctrine that the consciousness of a person, upon the death or dissolution of the aggregates (skandhas), becomes one of the contributing causes for the arising of a new group of skandhas.

The consciousness arising in the new person is neither identical to, nor entirely different from, the old consciousness, but forms part of a causal continuum or stream with it. The basic cause for this persistent re-arising of personality is the abiding of consciousness in avijja (ignorance); when ignorance is uprooted, rebirth ceases.