Yes, there are many religions without holy books. Most religions have holy books because that is the best way to preserve knowledge from one generation to another; however, religion is older than writing, so there are many religions without holy books; for example: the various religions the Native Americans, the old religions of the various African peoples and the religions of the indigenous aborigines of Australia, New Zealand and the Pacific Islands.
Confucianism has bee suggested here as a religion without a holy book, but Confucianism is not properly described as a religion. It is an ethical and philosophical system. Even if you do define Confucianism as a religion, it does include a holy book. Confucius wrote his teachings in the Analects of Confucius.
The modern neo-Pagan religion based on the indigenous religions of ancient Europe might be considered a religions without a holy book, except that leading practitioners keep writing books such as the Book of Shadows.
World's Religions by Huston Smith is not extensive, but it is well done.
There are several - different religions have different holy books.
Almost all major religions have holy books and holy languages.
The Christian Bible is the most sold book in the world.
The Bible is the holy book for Jews (Old Testament) and Christians (New Testament) and the Koran is the holy book for Muslims.
Islam - Quran Catholic - Bible
The Bible is the holy book for Jews (Old Testament) and Christians (New Testament) and the Koran is the holy book for Muslims.
For Buddhists the Tripitaka, or Three Baskets are the primary teachings. for Hinduism the Vedas and the Upanishads are their sacred texts. For Sikhs their holy book is the Holy Granth
Judaism. Christianity also shares some of the same holy books.
Christianity and Judaism both consider the Bible a holy book, although the specific content and interpretations may vary between the two religions.
What are the key characteristics of each of the five universal religions. do they have a holy book. a god . a place of worship . rituals . what are they called?
The Middle East has numerous religions with numerous holy books. Islam is currently the most popular religion in the region and its holy book is the Qur'an, but Jews and the Christians revere the Bible. There are also Druze, Baha'i, Yazidi, Zoroastrians, and other small religions with their own holy books.