The Nianfo, alternatively in Japanese as 念仏 , Korean: 염불; RR: yeombul, or in Vietnamese: niệm Phật, is a Buddhist practice central to the tradition of Pure Land Buddhism, though not exclusive to it. In the context of Pure Land practice, it typically refers to the repetition of the name of Amitābha in a ritualized form, though in some contexts it can refer instead to a more meditative practice. It is a translation of Sanskrit buddhānusmṛti.

Buddhānusmṛti, meaning "Buddha-mindfulness", is a common Buddhist practice in all Buddhist traditions which involves meditating on the virtues of the Buddha, mainly Gautama Buddha as the meditation or contemplation subject. Later Mahayana sects like Pureland Buddhism focused on Amida Buddha instead, mainly to pray for rebirth in the Western Pure Land.