Hinduism - Bhagavad Gita
Judaism - Torah
Zoroastrianism - Avesta
Buddhism - Tripitakas
Christianity - Bible (New Testament)
Islam - al Qur'an
Bahá'i Faith - Kitáb-i-Aqdas
There are several - different religions have different holy books.
Almost all major religions have holy books and holy languages.
There are no other books. However, you can find books of Apocrypha which are not part of the 66. Some religions use them and even include them in their Bible. In addition, you can find even more remote books which most do not consider Holy.
Answer 1What holy book? There are several religions in the world, each of which has its own holy books. Answer 2Regarding all God religions (Judaism, Christianity, and Islam), God holy books are founded by God (or Allah in Arabic and same God worshiped in Judaism, Christianity, and Islam). This include Psalm revealed by God to Abraham, Torah revealed by God to Moses, the Bible revealed by God to Jesus, and Qur'an revealed by God to Muhammad (peace be upon them all).Other holy books are founded by the religious leaders of the corresponding religions.
Judaism. Christianity also shares some of the same holy books.
There are many books for Hinduism. Ramayana and Mahabharata are the two important holy books of Hinduism. Bhagavad Gita [The technical part of Book 6 of the Mahabharata] is also the world famous one.
World's Religions by Huston Smith is not extensive, but it is well done.
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.
The Bible is the holy book for Jews (Old Testament) and Christians (New Testament) and the Koran is the holy book for Muslims.
It describes guidelines for moral behavior.
Jerusalem
The Bible is the holy book for Jews (Old Testament) and Christians (New Testament) and the Koran is the holy book for Muslims.