Most of the Lahaulis follow a combination of Hinduism and Tibetan Buddhism of the Drukpa Kagyu order, while the Spiti Bhotia follow Tibetan Buddhism of the Gelugpa order. Within Lahoul, the Todh/Gahr(upper region of lahaul towards Ladhakh) region had the strongest Buddhist influence, owing to its close proximity to Spiti. Lahoul has temples such as Trilokinath temple, where pilgrims worship a certain god in different manifestations, notably in the form of Shiva and Avalokiteshvara where Udaipur is a puritan temple. This bas-relief, of marble, depicts the Buddhist deity Avalokiteshvara (the embodiment of the Buddha's compassion) in a stylized seated position; Hindu devotees take it to be Shiva Nataraj, Shiva dancing. This image appears to be of sixteenth century Chamba craftsmanship. It was created to replace the original black stone image of the deity, which became damaged by art looters. This original image is kept beneath the plinth of the shrine. It appears to be of 12th century Kashmiri provenance . Much of the art thieves are active in this remote belt because of neglected gompas and temples.Raja Ghepan, one of the major deities is greatly work shipped by almost all Lahauli.
Before the spread of Tibetan Buddhism and Hinduism, the people were adherents of the religion 'Lung Pe Chhoi', an animistic religion that had some affinities with the Bön religion of Tibet. While the religion flourished, animal and human sacrifices were regularly offered up to the 'Iha', a term that refers to evil spirits residing in the natural world, notably in the old pencil-cedar trees, rocks and caves. Vestiges of the Lung Pe Chhoi religion can be seen in the behaviour of the Lamas, who are believed to possess certain supernatural powers.
The Losar festival (also known as Halda in Lahauli) is celebrated between the months of January and February. The date of celebration is decided by the Lamas. It has the same significance as the Diwali festival of Hinduism, but is
