- Babb
- Babbage
- Baber
- Bach
- Bachand
- Back
- Bacquet
- Bader
- Badgett
- Baer
- Baesler
- Baffour
- Bagby
- Bagdasaryan
- Bahr
- Bailey
- Bain
- Bainer
- Baird
- Baker
- Balden
- Baldridge
- Baldwin
- Bale
- Bales
- Balko
- Ball
- Ballard
- Ballew
- Ballinger
- Baltenberger
- Baltzer
- Banahan
- Bandoroff
- Bane
- Baniak
- Banks
- Banta
- Baquero
- Barbee
- Barber
- Barbera
- Barbieri
- Barbour
- Barfield
- Barile
- Barker
- Barks
- Barleston
- Barlow
- Barnes
- Barnett
- Barnette
- Barnhart
- Barnhill
- Barnott
- Baron
- Barrett
- Barry
- Bartley
- Barton
- Barua
- Baseheart
- Bashford
- Bashikhes
- Basil
- Baskette
- Baskin
- Basore
- Bast
- Bates
- Batiste
- Batteiger
- Battle
- Batts
- Bauer
- Baugh
- Baughman
- Baumann
- Baumgardner
- Baumgartner
- Baxter
- Bayer
- Baylous
- Bayma
- Baynham
- Beach
- Beagle
- Beale
- Beam
- Bean
- Beard
- Beasley
- Beattie
- Beatty
- Beaty
- Beaven
- Bechtol
- Beck
- Becker
- Beckham
- Beckler
- Becknell
- Bedleman
- Beebout
- Beglau
- Begley
- Behr
- Beidleman
- Beile
- Belanger
- Belden
- Belding
- Belin
- Bell
- Bellamy
- Bellis
- Belluscio
- Belsak
- Belt
- Bennett
- Bentleu
- Bentley
- Berge
- Bergstrom
- Bernard
- Berrios
- Berry
- Berryman
- Bertoldo
- Bertram
- Bess
- Best
- Bettenhausen
- Betts
- Beuscher
- Bevins
- Bewley
- Bharman
- Bhatt
- Bibb
- Bibbs
- Bibby
- Biddle
- Bidwell
- Biggers
- Biggerstaff
- Biglieri
- Bimschleger
- Binder
- Binford
- Bingham
- Birch
- Birchfield
- Birdsong
- Birdwhistell
- Birmingham
- Biroschik
- Bischoff
- Bisczat
- Bishop
- Bisset
- Bissmeyer
- Bivens
- Bivins
- Bizer
- Bjalobok
- Bjork
- Black
- Blackburn
- Blackford
- Blaeser
- Blain
- Blair
- Blake
- Blakeman
- Blancet
- Blanch
- Blanchard
- Blanco
- Bland
- Blandford
- Blankenship
- Blanton
- Blasdel
- Blaydes
- Blaylock
- Bledsoe
- Blethen
- Blevins
- Block
- Blomquist
- Bloomfield
- Blues
- Blumenfeld
- Blumer
- Blumetti
- Boardman
- Boateng
- Bobrowski
- Boes
- Boggess
- Boggs
- Bohacek
- Bohart
- Bohn
- Bohon
- Boian
- Boison
- Bojanowski
- Boland
- Boldman
- Bolender
- Boley
- Bolin
- Boling
- Boll
- Bolling
- Bollinger
- Bolte
- Bolton
- Bond
- Bondada
- Bondurant
- Bonfert
- Bongiorno
- Bonner
- Bontrager
- Booker
- Boone
- Boorman
- Booth
- Booton
- Boots
- Bootze
- Borden
- Borders
- Bossert
- Botkin
- Bottom
- Bottorff
- Botts
- Boucher
- Boulder
- Bourgois
- Bourne
- Bouvin
- Bow
- Bowden
- Bowen
- Bowers
- Bowes
- Bowlds
- Bowling
- Bowman
- Bowsher
- Bowyer
- Boyd
- Boyle
- Boyles
- Bozee
- Brack
- Braddock
- Bradfield
- Bradford
- Bradley
- Bradshaw
- Brady
- Bramel
- Branam
- Brancato
- Brandenburg
- Brandstetter
- Branham
- Brann
- Brannen
- Bransom
- Branstetter
- Branstrator
- Brashear
- Bratcher
- Bratt
- Bratton
- Braun
- Bravard
- Brawley
- Bray
- Brazelton
- Breaden
- Breathitt
- Breazeale
- Breeden
- Breeding
- Breeze
- Brennan
- Brenner
- Brenzel
- Brevis
- Brewer
- Brice
- Bricken
- Bridges
- Bridwell
- Briggs
- Bright
- Brinegar
- Brinlee
- Brisbay
- Briscoe
- Brisky
- Brittain
- Britton
- Brixey
- Broadbent
- Broaddus
- Broadus
- Brock
- Bromagen
- Bromley
- Bronner
- Brooke
- Brookes
- Brooking
- Brooks
- Broster
- Brough
- Broughton
- Brouse
- Brown
- Browne
- Browning
- Bruce
- Brucken
- Brummer
- Brundige
- Brune
- Bruner
- Brunn
- Bruno
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- Bruzina
- Bryan
- Bryant
- Bryson
- Buban
- Buch
- Buchanan
- Bucher
- Buck
- Buckholtz
- Buckland
- Buckler
- Buckles
- Buckley
- Buckner
- Buede
- Buffin
- Buford
- Bugay
- Bugg
- Bullard
- Bullock
- Bumpase
- Bunch
- Bundy
- Buntin
- Bunting
- Bunton
- Burch
- Burchell
- Burchette
- Burchfield
- Burd
- Burdette
- Burg
- Burge
- Burger
- Burgess
- Burke
- Burkett
- Burkhart
- Burkhead
- Burlew
- Burnam
- Burnett
- Burnette
- Burns
- Burnside
- Burrell
- Burroughs
- Burruss
- Burton
- Burus
- Burwell
- Buschmann
- Bush
- Busson
- Butcher
- Butler
- Button
- Buxton
- Byers
- Byington
- Bynum
- Byrd
- Byrne
- Byron
- Byzet