- Ayyubids1
- Banks and banking1
- Baptism--Catholic Church1
- Barberino, Bardo da1
- Bardi, Giovanni de', conte di Vernio, 1534-16121
- Baronto, Francesca di1
- Baronto, Taddeo di1
- Baronto, Ventura di1
- Barontolo, Barontolo di1
- Bartholomew, of San Concordio, 1262-13471
- Baʻal ha-Maʼor (Gerondi, Zerahiah ben Isaac, ha-Levi)1
- Beeleye, John de1
- Beeleye, Margery de1
- Belgium17
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- Belvis family1
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- Benedictines2
- Benediction of the Blessed Sacrament (Music)1
- Benedictionals1