Tennis Players Starting with B
- BoYoung Jeong/Mio Mushika
- Berfu Cengiz/Guiomar Maristany Zuleta De Reales
- Bojana Marinkovic/Ekaterina Ovcharenko
- Berta Bonardi/Camila Romero
- Brisbane
- Berfu Cengiz
- Bronte Murgett/Summer Yardley
- B Reboul, F/Krejcikova
- Burgos
- B Arevalo, M/Mattek Sands
- Bang Shuo Yin
- Bautista Vilicich
- BoYoung Jeong/Vittoria Modesti
- Branko Djuric/Nick Ihlenfeld
- Brora Rangers
- Borussia Dortmund II
- Boyacá Chicó
- Bianca Bulat/Iulia Andreea Ionescu
- Bang Shuo Yin/Yu Hsiang Su
- Benfica (W)
- Brann (W)
- Brighton (W)
- Bayer 04 Leverkusen (Calvin) Esports
- Borussia Dortmund (Luntik) Esports
- Brisbane Roar FC (W)
- Belouizdad
- Bangladesh Police
- Botafogo RJ
- Botafogo SP
- Ballymena United
- Bonnyrigg Rose Athletic
- Bellinzona
- Basel
- Bristol City (W)
- Bangu RJ
- Bandirmaspor
- Bodrumspor
- Boluspor
- Blau Weiss Linz
- Barcelona SC
- B Munar, J/Zapata Miralles
- Benjamin Ferreira Wortsman
- Bu Yunchaokete/Yi Zhou
- Blaz Rola/Grega Zemlja
- Bu Yunchaokete/Zhizhen Zhang
- Benjamin Balleret
- Blaise Bicknell
- Benfica B
- Benjamin Lock/Courtney John Lock
- Benedict Badza
- Blaise Bicknell/Rowland Phillips
- Banthia Siddhant
- Boston Bruins
- Brooklyn Nets
- Bosnien Hercegovina
- Bharath Nishok Kumaran
- B Haase, R/Van De Zandschulp
- B Galan, D E/Zapata Miralles
- Busan KCC Egis
- BoYoung Jeong/Sarah Van Emst
- Boris Butulija/Amaury Raynel
- B Alexandrova, EK/Mattek Sands
- B Ofner, S/Zapata Miralles
- Basak Eraydin/Doga Turkmen
- Brian Bozemoj
- Bekzat Almakhan
- B Bublik, A/van De Zandschulp
- Bruno Fernandez
- Beitar Jerusalem
- Bosca San Bernardo Cuneo (F)
- BOGDANKA LUK Lublin
- Bursa B.Sehir Bld.
- Bigadic BLD
- BAM Acqua S. Bernardo Cuneo
- BCC Castellana Grotte
- Bela Tamhankar
- Baoluo Zheng
- Bestetti Giuliana
- Brian Bozemoj/Stijn Slump
- Bianca Bulat/Gina Isabell Trautvetter
- Baysangur Chamsoudinov
- Buffalo Sabres
- Benedikt Henning
- Bulgaria (W)