Buddhist vegetarianism is the practice of vegetarianism by significant portions of Mahayana Buddhist monastics and laypersons as well as some Buddhists of other sects. In Buddhism, the views on vegetarianism vary between different schools of thought. The Mahayana schools generally recommend a vegetarian diet, claiming that Gautama Buddha set forth in some of the sutras that his followers must not eat the flesh of any sentient being.

In Buddhism, sentient beings are beings with consciousness, sentience, or in some contexts life itself.