A Pratyekabuddha (Sanskrit: प्रत्येकबुद्ध) or paccekabuddha (Pali: पच्चेकबुद्ध), literally "a lone buddha", "a buddha on their own" or "a private buddha", is one of three types of enlightened beings according to some schools of Buddhism. The other two types are arhats and Sammāsambuddhas (Sanskrit samyaksambuddhas).
The yana or "vehicle" by which pratyekabuddhas achieve enlightenment is called the pratyekabuddhayāna in Indian Buddhist tradition.
Pratyekabuddhas are said to achieve enlightenment on their own, without the use of teachers or guides, according to some traditions by contemplating the principle of dependent origination. They are said to arise only in ages where there is no Buddha and the Buddhist teachings (Sanskrit: dharma; Pāli: dhamma) are lost. "The idea of a Paccekabuddha … is interesting, inasmuch as it implies that even when the four truths are not preached they still exist and can be discovered by anyone who makes the necessary mental and moral effort". Many may arise at a single time.
According to the Theravada school, Paccekabuddhas ("one who has attained to supreme and perfect insight, but who dies without proclaiming the truth to the world") are unable to teach the Dhamma, which requires the omniscience and supreme compassion of a sammāsambuddha, and even he hesitates to attempt to teach. Paccekabuddha give moral teachings but do not bring others to enlightenment. They leave no sangha as a legacy to carry on the Dhamma.
In the 4th century Mahāyāna abhidharma work Abhidharmasamuccaya, Asanga describes followers of the Pratyekabuddha Vehicle as those who dwell alone like a rhinoceros or as a solitary conquerors (Skt. pratyekajina) living in a small group. Here they are characterized as utilizing the same canon of texts as the śrāvakas, the Śrāvaka Piṭaka, but having a different set of teachings, the Pratyekabuddha Dharma.