B-Bad
- B Hive
- Baa 'Umbug
- Babcia
- Baby Blue
- Bacchus +3
- Back o' the Moon
- Badacol
- Badger Sett
- Badger +8
- Badgers Drift
Bae-Bak
- Bagherra
- Bai-Hu
- Bakers Dozen
- Bakewell
Bal
- Bala-Ball
  - Baleine
  - Bali Hai
  - Balinga Two
  - Balina Sloe
  - Balla Salla
  - Balladore
  - Ballathie
  - Ballerina
- Balm-Balz
  - Balmaha
  - Baloo Too
  - Balthazar
  - Baltic
  - Baltimore Lass
  - Balzac
Bam-Baq
- Bandit
- Banjo +2
Bar
- Bar_-Barc
  - Bar G
  - Barachiel
  - Barbara
  - Barbara Anne
  - Barbara E
  - Barbara Jean
  - Barbara-May
  - Barcolina
- Bard-Bark
- Barl-Barm
  - Barley
  - Barleycorn
  - Barleyfirth
  - Barling
- Barn
- Baro-Barz
  - Barolo
  - Baron +2
  - Barossa
  - Barramundi
  - Barrel of Ale
  - Barrogill
  - barryanne
  - Barton Boat No5
  - Barton Mead
Bas
Bat-Baz
- Batavia
- Batesy
- Bathsheba +2
- Batto
- Bavaria

Be-Beaq
- Be Kalmer
- Beacon Tarn
- Beagle
- Beam
- Beamar
Bear-Beat
Beau-Beaz
Beu-Bed
- Beckwood
- Becky +2
- Beddington Belle
- Bede
- Bedford
Bee-Bek
Bel
- Bela-Belk
  - Belcarin
  - Belgarath
  - Belgarian
  - Belgarion +2
  - Belgium
- Bell-Belz
  - Bella +2
  - Bella Louise
  - Belladonna +2
  - Bellatrix
  - Belle +2
  - Belle Epoque
  - Belmont +2
  - Belwyn
Ben
- Bena-Beni
  - Ben +3
  - Ben Anna
  - Ben Cruachan
  - Benbecca
  - Bendigedig
  - Beneva +2
  - Benevolence
  - Bengal Tiger
- Benj-Benz
  - Benjamin
  - Benjamin Mark
  - Benji +2
  - Benrin
  - Benson +2
Beo-Bes
- Beregaria
- Berengaria
- Bernicia
- Bernulf
- Bertha +3
- Bertie
- Besorah
- Bess +3
- Bessie Surtees
- Best O' Mates
Bet
- Beta-Bets
- Bett-Betz
Beu-Bez
- Beulah Ellen
- Beulah May
- Beverly
- Bewick
- Bewick Swan
- Bewitched
- Bexford

Bhaga Chal

Bla
Ble-Blo
- Blencathra +3
- Blenheim
- Blewit
- Blim
- Bliss +6
- Blossom +2
- Blow It
Blue
- Blue A-Blue C
- Blue D-Blue I
- Blue J-Blue Q
  - Blue Jamma
  - Blue Jay
  - Blue Lady
  - Blue Meon
  - Blue Moon +13
  - Blue on Blue
  - Blue Orchid
  - Blue Pearl +2
  - Blue R-Blue S
  - Blue T-Blue Z
  - Bluea-Bluez
    - Bluebell +10
    - Bluemayne
    - Bluenote
    - Blues
    - Bluestone
- Bly
  - Blyford
- Boa
  - Boadicea
  - Boar's Head
- Bob-Boc
- Bod-Bol
  - Bodge Too
  - Bodhran
  - Bogwoppit
  - Bohemian
  - Bojangles +3
  - Bo'Jangles
  - Bojo
  - Bolin
  - Bolt Hole
- Bom-Boq
  - Bon Accord
  - Bon Temps Roule
  - Bones
  - Bongaloo
  - Bonnie +2
  - Bonnie Lass
  - Boojum
  - Bootlegger
- Bor-Bos
  - Borage
  - Border Raider
  - Border Rose
  - Borderline
  - Boscobel
  - Bossy Boots
  - Bossy Lady
  - Bostin'
  - Bosworth +2
- Bot-Bov
- Bow-Boz
- Bra
  - Braa-Bral
  - Bram
    - Bramber
    - Bramble +6
    - Brambleberry
    - Bramlea
    - Bramley
  - Bran-Braz
- Bre
  - Breakaway
  - Breaking The Ice
  - Brecon
  - Breeze
  - Bren-De-Rek
  - Brendon
  - Breniara
  - Brentwood
- Bria-Brif
  - Brian +2
  - Brianthea
  - Briar +2
  - Briar Rose
  - Briardene
  - Briarley
  - Briarose
- Brig-Brim
- Brin-Briz
- Bro
  - Broa-Bron
    - Broadside
    - Broadstairs
    - Broadsword
    - Brocc
    - Brock +2
    - Bronington
    - Bronte +2
    - Bronwyn +2
  - Broo-Broz
- Bru
- Bry
  - Brymar
  - Brynbella
  - Bryony
- B'Seeing You

By Chance