B
- Baptism
- Baptism of Jesus
- Baptism of Poland
- Baptist
- Baptist Bible Fellowship International
- Baptist General Conference
- Baptist General Conference of Canada
- Baptist Missionary Association of America
- Baptist Union of Australia
- Baptist Union of Great Britain
- Baptist Union of Scotland
- Baptist Union of Wales
- Baptist World Alliance
- Baptists
- Barabbas
- Barnabas
- Bartholomew
- Bartholomew the Apostle
- Bartimaeus (Biblical character)
- Beatification
- Bel and the Dragon
- Bernard of Clairvaux
- Bible
- Bible chronology
- Bible prophecy
- Bible Student movement
- Bible translations into English
- Biblical apocrypha
- Biblical canon
- Biblical law in Christianity
- Biblical Magi
- Biblical manuscript
- Biblical studies
- Bishop
- Blastus
- Blind man of Bethsaida
- Bonaventure
- Book of Amos
- Book of Baruch
- Book of Common Prayer
- Book of Concord
- Book of Daniel
- Book of Deuteronomy
- Book of Enoch
- Book of Esther
- Book of Exodus
- Book of Ezekiel
- Book of Ezra
- Book of Genesis
- Book of Habakkuk
- Book of Haggai
- Book of Hosea
- Book of Isaiah
- Book of Jeremiah
- Book of Job
- Book of Joel
- Book of Jonah
- Book of Joshua
- Book of Judges
- Book of Judith
- Book of Lamentations
- Book of Leviticus
- Book of Malachi
- Book of Micah
- Book of Mormon
- Book of Nahum
- Book of Nehemiah
- Book of Numbers
- Book of Obadiah
- Book of Odes (Bible)
- Book of Proverbs
- Book of Revelation
- Book of Ruth
- Book of Tobit
- Book of Wisdom
- Book of Zechariah
- Book of Zephaniah
- Books of Chronicles
- Books of Kings
- Books of Samuel
- Books of the Bible
- Brethren in Christ Church
- Britain Yearly Meeting
- British Methodist Episcopal Church
- British New Church Movement
- British Orthodox Church
- Buddhism and Christianity
- Burial of Jesus
- Byzantine–Ottoman Wars
- Byzantine Empire
- Byzantine Iconoclasm
- Byzantium