Hinduism generally is regarded as the oldest formal religion in the world. The origins of Hinduism go back to the pastoral Aryan tribes, spilling over the Hindu Kush from Inner Asia, and mixing with the urban civilization of the Indus Valley and with the tribal cultures of hunting and gathering peoples in the area. Unlike other world religions, Hinduism had no single founder and has never been missionary in orientation. It is believed that about 1200 B.C., or even earlier by some accounts, the Vedas, a body of hymns originating in northern India were produced; these texts form the theological and philosophical precepts of Hinduism. Nepal is also known as country of Temples. In every corner of the in Captial, visitors can see numerous temples. Pasupathinath Temple is known as biggest temple in the country.
Buddhism had its origin in the teachings of Siddhartha Gautama, a Kshatriya caste prince of the Sakya clan; he was born in Lumbini, in the central Tarai Region, about 563 B.C. His father was the ruler of a minor principality in the region. Born a Hindu and educated in the Hindu tradition, Siddhartha Gautama renounced worldly life at about the age of twenty-nine and spent the next six years in meditation. At the end of this time, he attained enlightenment; thereafter, known as the Buddha, or the Enlightened One, he devoted the remainder of his life to preaching his doctrine. Many Buddha Stupas are spread around the country. Swyambhunath,Boudhanath, Lumbini are the famous Buddhist Stupas in the country.
There are 7,105 Catholics in Nepal, forming an Apostolic Prefecture(2004)  Protestants in Nepal are a small religious minority, accounting for only .45% of the population. Among the denominations mentioned in are:
National Churches Fellowship of Nepal
Churches of Nepal
Famous Church in Nepal is Jawalakhel's Church.
Muslims of Nepal speak the Urdu language, and they constitute eight percent of the total population of 14,000,000, . The majority of the Muslims live in the mountainous areas adjacent to the border with India, but their economic situation leaves much to be desired. They are not involved in any commercial or industrial undertakings, and the majority of them are either unskilled laborers or small-scale subsistence farmers, with a sprinkling of some lower-level civil servants.
Thus ignorance and backwardness are rampant among Nepalese Muslims, and this had led to their forfeiture of their human rights in the country.
Even in the faith that they profess, their knowledge of Islamic principles and culture is very meager, and they do need guidance and direction in this respect. Many of them are Muslims in name only, but hardly know anything else about Islam.
In the capital, Katmandu, which is situated in the middle of a mountainous area, there are four mosques, though there also are Islamic schools, such as the Jankbur Daham School, which was set up in 1386 AH in that city. It is used as a center for producing Da awa activists, as Islamic education and the teaching of the Arabic language are not allowed in government schools.