In some schools of Buddhism, bardo or antarābhava is an intermediate, transitional, or liminal state between death and rebirth. The concept arose soon after Gautama Buddha's death, with a number of earlier Buddhist schools accepting the existence of such an intermediate state, while other schools rejected it. The concept of antarābhava, an intervening state between death and rebirth, was brought into Buddhism from the Vedic-Upanishadic philosophical tradition. Later Buddhism expanded the bardo concept to six or more states of consciousness covering every stage of life and death. In Tibetan Buddhism, bardo is the central theme of the Bardo Thodol, the Tibetan Book of the Dead, a text intended to both guide the recently deceased person through the death bardo to gain a better rebirth and also to help their loved ones with the grieving process.

Rebirth in Buddhism refers to the teaching that the actions of a sentient being lead to a new existence after death, in an endless cycle called saṃsāra. This cycle is considered to be dukkha, unsatisfactory and painful. The cycle stops only if Nirvana (liberation) is achieved by insight and the extinguishing of craving. Rebirth is one of the foundational doctrines of Buddhism, along with karma and Nirvana. Rebirth was a key teaching of early Buddhism along with the doctrine of karma. In Early Buddhist Sources, the Buddha claims to have knowledge of his many past lives. Rebirth and other concepts of the afterlife have been interpreted in different ways by different Buddhist traditions.