<P> Long - established religions in Vietnam include the Vietnamese folk religion, which has been historically structured by the doctrines of Confucianism and Taoism from China, as well as a strong tradition of Buddhism (called the three teachings or tam giáo). According to official statistics from the government, as of 2014 there are 24 million people identified with one of the recognised organised religions, out of a population of 90 million . Of these, 11 million are Buddhists (12.2%), 6.2 million are Catholics (6.8%), 4.4 million are Caodaists (4.8%), 1.4 million are Protestants (1.6%), 1.3 million are Hoahaoists (1.4%), and there are 75,000 Muslims, 7,000 Bahá'ís, 1,500 Hindus and other smaller groups (<1%). Traditional folk religions (worship of gods, goddesses and ancestors) have experienced a rebirth since the 1980s . </P> <P> According to estimates by the Pew Research Center in 2010, most of the religious Vietnamese practiced folk religions (45.3%). 16.4% were Buddhists, 8.2% were Christians (mostly Catholics), and about 30% were unaffiliated to any religion . Officially, the Socialist Republic of Vietnam is an atheist state as declared by its communist government . </P> <P> Although according to a 1999 census most Vietnamese list themselves as having no religious affiliation, religion, as defined by shared beliefs and practices, remains an integral part of Vietnamese life, dictating the social behaviours and spiritual practices of Vietnamese individuals in Vietnam and abroad . The triple religion (Vietnamese: tam giáo), referring to the syncretic combination of Mahayana Buddhism, Confucianism, and Taoism, and Vietnamese folk religion (often combined too with them), remain a strong influence on the beliefs and practices of the Vietnamese, even if the levels of formal membership in these religious communities may not reflect that influence . One of the most notable and universal spiritual practices common to Vietnamese is ancestor veneration, a practice shared with Chinese and most other Asian cultures . Practically all Vietnamese, regardless of formal religious affiliation, have an altar in their home or business where prayers are offered to their ancestors . These offerings and practices are done frequently during important traditional or religious celebrations (e.g., death anniversaries), the starting of a new business, or even when a family member needs guidance or counsel . Belief in ghosts and spirits is common; it is commonly believed that failing to perform the proper rituals for one's ancestors will cause them to become hungry ghosts (Vietnamese: ma đói). </P> <P> A 2002 Pew Research Center report claimed that 24% of the population of Vietnam view religion as "very important". </P>

Which religion gives order to the social structure of vietnam
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