Hindu religion or Hindu Dharma is held by almost 90% of the population. Its teaching is to reach peace and harmony of life guided by the Wedas as Holy Scriptures. Hindu Dharma is a special blend of Hinduism, Buddhism and ancestor worship that has been flourishing over centuries. They believe in ancestor worship that has been flourishing over centuries. They believe in One supreme God called: Ida Sanghyang Widhi Wasa, with His three manifestations known as: Trisakti, that is: Brahma, the Creator, Wisnu the server, and Shiwa the transformer.

Religion is inseparable from the everyday life, from the simply daily ritual to the lavishly semi Annually temple festivals. No opportunity is lost to worship God in an unending series of ceremonies that stretches from birth up to after death of the people. There are three things guiding the spiritual life of the Hindu Balinese people which are:
- Tatwa (philosophy)
- Susila (Etiquette/moral codes)
- Upacara (rituals)

Tatwa tells about the Panca Crada, the five principle life of the Hindu Balinese people which are :
- Brahman : The godhead
- Atman : The Soul
- Samsara : Reincarnation
- Karma : The law of cause and affect
- Moksha : Unity with God/Nirwana

Susila, moral codes, put emphasis on three-thing eq:
- Positive thinking
- Positive talking
- Positive action

Known locally as "Trikaya Parisuda" Related to those moral codes also can be mentioned "Tat Wam Asi", frelly translated into "I am You" or "You are Me" which controls and prevents somebody from committing (intentional) wrong doings.

Upacara, are those religious ceremonies classified into five classification eq:
- Dewa Yadnya : Ceremonies related to the worship of god
- Rsi Yadnya : Related to the prophet, priest or priest hood
- Pitra Yadnya : Related to the dead
- Manusa yadnya : Ceremonies for human beings
- Buta Yadnya : Sacrifices to placate the negative (Butas)

As the out come of the tattwa among others you can see a lot of temples dedicated to Brahman, God the almighty, and temples dedicated to the ancestors, the souls of the dead relatives, the belief in Samsara creates the opinion that having children is important to give possibility for the soul of reincarnate. Family planning is successful in Bali because there is also a set of rules spiritually controlling the birth of too many children well which parents cannot do if they have too many.

Karma law prevents people from doing bad deeds because such things will result in negative effect to the doer. While belief in Mokhsa suggest positive attitude that eventually everybody every soul, after series of reincarnations will be able to join the origin, the Godhead.

Susila prescribes good behaviors and attitudes which are vital in social life, unless one is able to control himself and manage to place himself in the right position he will certainly suffer in his life specially in Balinese society where "mental torture" is one of the most feared, a kind of social punishment like being declared socially dead an ignored. Upacara manifests itself in innumerable ceremonies, such as semi annual or annual temple festivals, ordination ceremonies, cremation tooth filling and wedding ceremonies and sacrifices. An example of such sacrifice is done yearly the day before "Nyepi", New Year.

Another philosophy of the Balinese is the "Tri Hita karana" or the three prosperity/happiness supporting elements in the form of harmonious relationship between:
- Man and God
- Man and Man
- Man and Environment

Man-God relationship can clearly be seen in the religious attitude of the Balinese Hindu people. The religion is not only absorbed through the philosophy but also by actions in the way they make all sort offerings. It is also obvious in their devotion.

Man-Man relationship is regulated by the Awig awig or adat, traditional laws, both in written or unwritten forms.

Man-Environment relation, in common practices, can be seen among others in the traditional calendar. There are "good days" and "bad days". The "tumpek days" are the days of worship and respect.

For instance: "Tumpek Uduh" is the day when the Balinese people make offerings for trees.

"Tumpek kandang" for animals, and "Tumpek landep" to respect pointed things like Lance, daggers, krises, also for mental articles as gamelan orchestra instruments and recently this metal thing also cover motor bikes, cars etc. So, if you see cars are ceremonially decorated on a Saturday that is sure to be a "Tumpek landep" day.

Tumpek wayang is for performing arts perhaps it can be said that Tumpek suggests the Man depend on his other contests in the sense of his sources of food, tolls and fineness so he must respect and treads flossed well.

The environmental taboos days or rather weeks are known, as the "Ingkels" which come in turn's every year there are:
- Ingkel wong taboo for disrespect to human
- Ingkel soto to animals
- Ingkel mina to fisher
- Ingkel manuk to birds
- Ingkel taru to trees
- Ingkel buku to canes: bamboo, sugar canes

In short, the Tattwa, Susila, Upacara, Tat Wam Asi, Tri Hita Karana are some of the philosophies directing the Balinese in their day to day life. The teachings are given through traditional ways. It is very likely that Balinese do not know the philosophies by 'names' but they observe them all the same.

Those philosophies when properly observed will create an individual who is religious, friendly and has respect towards his fellowmen and his environment. His objective of life is to achieve a balance between material and spiritual life. The ultimate goal is religious purity: Moksha. The Balinese are after this goal.

When meeting Balinese, the formal greeting is done by clasping the palms of your hand, place them in front of your chest, the finger tips under the chain, and say: Om swasti Astu (Praying for safety and health). When you leave say: Om Cantih, Cantih, Cantih (Peace, Peace, Peace).