The Bodhisattva vow is a vow (Sanskrit: praṇidhāna, lit. aspiration or resolution) taken by some Mahāyāna Buddhists to achieve full buddhahood for the sake of all sentient beings. One who has taken the vow is nominally known as a bodhisattva (a being working towards buddhahood). This can be done by venerating all Buddhas and by cultivating supreme moral and spiritual perfection, to be placed in the service of others. In particular, bodhisattvas promise to practice the six perfections of giving, moral discipline, patience, effort, concentration and wisdom in order to fulfill their bodhicitta aim of attaining buddhahood for the sake of all beings.

The vow is commonly taken in a ritual setting, overseen by a senior monastic, teacher or guru.

Whereas the prātimokṣa vows cease at death, the bodhisattva vow extends into future lives. The bodhisattva vows should not be confused with the Bodhisattva Precepts (Skt. bodhisattva-śīla), which are specific ethical guidelines for bodhisattvas.