- Bachman
- Backlund
- Backman
- Baden
- Badtke
- Bafaro
- Bafus
- Bagby
- Bagwell
- Baier
- Bailey
- Bain
- Bains
- Baird
- Bajczyk
- Baker
- Bakke
- Balcom
- Baldwin
- Ball
- Ballard
- Ballinger
- Balyeat
- Balzer
- Bancroft
- Bangerter
- Bankhead
- Banks
- Bannerman
- Bannon
- Barany
- Barber
- Barcklay
- Barclay
- Bareither
- Barela
- Baril
- Barker
- Barko
- Barnard
- Barnes
- Barnett
- Barnhart
- Barr
- Barrett
- Barringer
- Barron
- Barry
- Barstow
- Bartholomaus
- Bartholomew
- Bartol
- Bartoletta
- Bartow
- Barzee
- Bascetta
- Basham
- Basinger
- Baskin
- Bass
- Bassett
- Batchelor
- Bates
- Battan
- Battin
- Bauer
- Baumbauer
- Baumhofer
- Baxter
- Bayley
- Baysinger
- Bazzano
- Beach
- Beam
- Beaman
- Bean
- Beary
- Beasley
- Beaton
- Beatty
- Beauchamp
- Beaudry
- Bechard
- Becherini
- Bechtold
- Beck
- Becker
- Becklund
- Beechinor
- Beeman
- Behler
- Behrens
- Beitey
- Bell
- Bellefeuille
- Bellmore
- Beloit
- Belote
- Beloved
- Belstad
- Belzman
- Bemis
- Bender
- Bendickson
- Bendixen
- Benefiel
- Benefield
- Benjamin
- Benner
- Bennett
- Benson
- Bent
- Bentley
- Berarducci
- Bereiter
- Berendt
- Berens
- Berg
- Bergan
- Bergeleen
- Bergeman
- Berger
- Bergin
- Bergstrom
- Berilla
- Berk
- Berman
- Bernards
- Bernier
- Bernstein
- Berreth
- Berroteran
- Berry
- Bertolino
- Best
- Bethel
- Betow
- Betts
- Betzer
- Beumer
- Beyenhof
- Bianco
- Bick
- Bieber
- Biel
- Bielen
- Bielenberg
- Bierwagen
- Biesen
- Biggerstaff
- Billeter
- Binford
- Bingham
- Bingle
- Binsfield
- Biondi
- Birch
- Birginal
- Birrer
- Bishop
- Bisson
- Bjerke
- Black
- Blair
- Blake
- Blakesley
- Blanch
- Blanchard
- Blanchette
- Bland
- Blank
- Blankenship
- Bleeker
- Blevins
- Blick
- Bliss
- Blixt
- Blosser
- Blossom
- Blue
- Blume
- Bly
- Blyton
- Bobb
- Bobbitt
- Boccaccio
- Bock
- Bocook
- Boehnke
- Boese
- Bogar
- Bogart
- Bohr
- Boileau
- Bolander
- Bolen
- Bombino
- Bonanno
- Bond
- Bonner
- Bonser
- Bontrager
- Bonuccelli
- Booher
- Booth
- Bopp
- Boquist
- Bordner
- Borgias
- Born
- Bosley
- Bossard
- Bosshardt
- Bostrom
- Boswell
- Bott
- Botter
- Bougher
- Boulden
- Bourcy
- Boutz
- Bove
- Bovey
- Bowen
- Bower
- Bowers
- Bowman
- Bowsher
- Boyce
- Boyd
- Boyko
- Boysen
- Bradbury
- Bradford
- Bradish
- Bradley
- Bradshaw
- Brady
- Braegger
- Brain
- Brandenburg
- Brandon
- Brandt
- Brangwin
- Branham
- Brannan
- Branson
- Branting
- Brantner
- Branum
- Brasch
- Brateng
- Bray
- Breckenridge
- Brennan
- Brenner
- Bresnahan
- Bressler
- Bretthauer
- Bretting
- Brevet
- Brewer
- Brice
- Brickner
- Bridgeman
- Bridges
- Brink
- Briscoe
- Britton
- Britz
- Broadstreet
- Brockway
- Broemmeling
- Brokaw
- Brooke
- Brookfield
- Brooks
- Brose
- Brow
- Brower
- Brown
- Browning
- Brownlee
- Bruce
- Bruegeman
- Brueggemeier
- Bruens
- Brumbaugh
- Brundell
- Brunette
- Bruya
- Bryan
- Bryans
- Bryant
- Buchanan
- Buchholz
- Bucholz
- Buck
- Buckley
- Budge
- Budke
- Buehler
- Buller
- Bumann
- Bunker
- Bunze
- Burch
- Burcham
- Burchett
- Burdett
- Burdick
- Bureta
- Burford
- Burger
- Burgess
- Burgin
- Burianek
- Burk
- Burkart
- Burke
- Burley
- Burney
- Burns
- Burpee
- Burrell
- Burris
- Bursch
- Burtness
- Burton
- Burunov
- Busby
- Busch
- Bush
- Busse
- Bussell
- Buth
- Butler
- Butterfield
- Butters
- Butz
- Buxton
- Bybee
- Bylund
- Bynagle
- Byrnes
- Byus