B
- Baker County, Florida – James McNair Baker, a judge and Confederate Senator.
- Bagby, California – Benjamin A. Bagby (merchant, hotelier, innkeeper)
- Bainbridge, New York – Commodore William Bainbridge
- Baird, Texas – Matthew Baird (president of Baldwin Locomotive Works)
- Baker, Montana – A.G. Baker (engineer with the Chicago, Milwaukee, St. Paul and Pacific Railroad)
- Baker City, Oregon – Senator Edward D. Baker (indirectly via Baker County, Oregon)
- Bakersfield, California – Colonel Thomas Baker
- Baldwin, Maine – Colonel (namesake of the Baldwin apple)
- Baldwinsville, New York – Dr. Jonas Baldwin (settler)
- Bale, California – Edward Turner Bale, land grantee
- Ballantine, Montana – E.P. Ballantine (homesteader)
- Baltimore, Maryland – Lord Baltimore
- Barber, California – O. C. Barber (president of the Diamond Match Company)
- Barberton, Ohio – O. C. Barber (president of the Diamond Match Company)
- Bard, California – Thomas R. Bard (irrigation district official)
- Bardstown, Kentucky – David Bard, who obtained the original town site from the governor of Virginia, and his brother William Bard, who surveyed the site.
- Baring Plantation, Maine – Alexander Baring, 1st Baron Ashburton
- Barnard, Vermont – Sir Francis Bernard (landholder) (note spelling)
- Barnes, California – Peter Barnes (first postmaster)
- Barnes Settlement, California – Thomas Barnes (founder)
- Barre, Massachusetts, Barre (city), Vermont & Barre (town), Vermont – Isaac Barré (Irish soldier and politician)
- Barrington, New Hampshire – John Shute Barrington, 1st Viscount Barrington (brother of Samuel Shute, governor of Massachusetts)
- Barrow, Alaska – Sir John Barrow
- Barstow, California – William Barstow Strong (ATSF president)
- Bartlett, California – Frank J. Barlett (chemical company executive)
- Bartlett, Illinois – Luther Bartlett
- Bartlett, New Hampshire – Dr. Josiah Bartlett
- Bartlett Springs, California – Green Bartlett (resort owner)
- Barton, Vermont – General William Barton
- Bastrop, Louisiana – Felipe Enrique Neri, Baron de Bastrop (Dutch embezzler who falsely claimed to be a nobleman)
- Bath, New Hampshire – William Pulteney, 1st Earl of Bath
- Beals, Maine – Manwaring Beal (settler)
- Bealville, California – Edward Fitzgerald Beale (landowner)
- Beardstown, Illinois – Thomas Beard (settler)
- Beatrice, Humboldt County, California – Beatrice White (first postmaster)
- Beaumont, Texas – Jefferson Beaumont (early settler and public official)
- Beckwourth, California – James Beckwourth, adventurer and early settler
- Bedford, New Hampshire – Lord John Russell, 4th Duke of Bedford
- Beeville, Texas – Barnard E. Bee, Sr. (served as Secretary of State and Secretary of War for the Republic of Texas) (indirectly, via Bee County, Texas)
- Belchertown, Massachusetts – Jonathan Belcher (governor of Massachusetts and New Jersey)
- Belden, California – Robert Belden (first postmaster)
- Bellows Falls, Vermont – Colonel Benjamin Bellows (landowner)
- Belmont, New Hampshire – August Belmont (financier)
- Beltrami, Minnesota – Giacomo Beltrami
- Belva, West Virginia – Belva Ann Lockwood
- Belzoni, Mississippi – Giovanni Battista Belzoni
- Benicia, California – Francisca Benicia Carillo de Vallejo
- Benner Township, Pennsylvania – General Phillip Benner (ironmaster)
- Bennettville, California – Thomas Bennett (mining company president)
- Bennington, New Hampshire – colonial governor Benning Wentworth (indirectly, via Bennington, Vermont)
- Bennington, Vermont – colonial governor Benning Wentworth
- Benton, 4 places in Arkansas/California/Maine/New Hampshire – Senator Thomas Hart Benton
- Benton Hot Springs, California – Senator Thomas Hart Benton
- Bentonville, Arkansas – Senator Thomas Hart Benton
- Beresford, South Dakota – Lord Charles Beresford
- Bergman, California – Jacob Bergman (stage coach driver)
- Berkeley, California – Bishop George Berkeley
- Berkley, Massachusetts – Bishop George Berkeley (The extra 'e' was apparently dropped by mistake when officially registered by the State House)
- ((Bernards Township)) Sir Francis Bernard of Nether Winchendon House, England
- Bernardston, Massachusetts – Sir Francis Bernard, 1st Baronet
- Berthoud, Colorado – Edward L. Berthoud (railroad surveyor and engineer)
- Bethel, California – James W. Bethel (local merchant)
- Beveridge, California – John Beveridge
- Bieber, California – Nathan Bieber (early settler and first postmaster)
- Billings, Montana – Frederick H. Billings
- Bingham, Maine – William Bingham (landowner)
- Binghamton, New York – William Bingham
- Birchville, California – L. Birch Adsit
- Bismarck, North Dakota – Otto von Bismarck
- Bishop, California – Samuel Addison Bishop (settler) (indirectly, via Bishop Creek)
- Blacksburg, Virginia – William Black (landowner)
- Blackstone, Massachusetts – Rev. William Blaxton (settler) (spelling variant)
- Blackwells Corner, California – George Blackwell (merchant)
- Blair, Nebraska – John Insley Blair (official of the Sioux City and Pacific Railroad)
- Blairsden, California – James A. Blair (financier of the Western Pacific Railroad)
- Blakely, Georgia – Captain Johnston Blakeley, U.S. Navy
- Blakes Landing, California – Jeremiah Blakes (owner)
- Blanchard, California – Rosie M. Blanchard (first postmaster)
- Blanco, Monterey County, California – Tom White (settler); "Blanco" is "White" in Spanish
- Blocksburg, California – Benjamin Blockburger (merchant)
- Bodfish, California – George H. Bodfish (early settler)
- Bodie, California – W.S. Bodey (prospector)
- Bonds Corner, California – Dr. J.L. Bond (homesteader)
- Bondville, California – Stephen Bond (merchant)
- Booge, South Dakota – C.A. Booge
- Boonville, California – W.W. Boone (merchant)
- Borden, California – Dr. James Borden (civic leader)
- Boscawen, New Hampshire – Lord Edward Boscawen
- Bourne, Massachusetts – Jonathan Bourne Sr. (son of Richard Bourne, who served in the Massachusetts General Court)
- Bowdoin, Maine – James Bowdoin (governor of Massachusetts)
- Bowdoinham, Maine – James Bowdoin (governor of Massachusetts)
- Bowie, Maryland – Colonel William D. Bowie
- Bowman, California – Harry Bowman (fruit grower)
- Bozeman, Montana – John Bozeman
- Bradford County, Florida – Capt. Richard Bradford, first Confederate officer from Florida to die in the Civil War
- Bradford Siding, California – Johnnie Bradford (clay businessman)
- Bradley, California – Bradley V. Sargent (landowner)
- Bradley, Maine – Bradley Blackman (settler)
- Bradtmoore, California – Bradley T. Moore (founder)
- Brandt, South Dakota – Rev. P.O. Brandt
- Branscomb, California – Benjamin Franklin Branscomb (early settler)
- Brattleboro, Vermont – Colonel William Brattle, Jr. (proprietor)
- Briceburg, California – William M. Brice (merchant)
- Brewer, Maine – Colonel John Brewer (settler)
- Brewster, Massachusetts – Elder William Brewster
- Brewster, Minnesota – Elder William Brewster (indirectly, via Brewster, Massachusetts)
- Brewster, New York – Walter and James Brewster (two early farmer landowners)
- Briceland, California – John C. Briceland (landowner)
- Bricelyn, Minnesota – John Brice (landowner)
- Bridgton, Maine – Moody Bridges
- Broadus, Montana – Broaddus family (early settlers) (note spelling)
- Brockton, Massachusetts – Isaac Brock (British Army officer and administrator) (indirectly, after a local merchant heard of Brockville, Ontario on a trip to Niagara Falls)
- Brockway, California – Nathaniel Brockway (uncle of postmaster)
- Broderick, California – U.S. Senator David C. Broderick
- Brooks, Maine – John Brooks (Federalist candidate for Governor of Massachusetts)
- Brooks County, Georgia – Congressman Preston Brooks
- Brooksville, Florida – Congressman Preston Brooks
- Brown, California – George Brown (hotelier)
- Brownfield, Maine – Captain Henry Young Brown (served in the French and Indian War)
- Brownington, Vermont – Daniel and Timothy Brown (landholders)
- Browns Valley, Minnesota – Joseph Brown (founder)
- Brownsville, Calaveras County, California – Alfred Brown
- Brownsville, Yuba County, California – I.E. Brown (sawmill owner)
- Brownsville, Maryland – Tobias Brown (early settler)
- Brownsville, Pennsylvania – Thomas Brown (landowner)
- Brownsville, Tennessee – Jacob Jennings Brown (American army officer)
- Brownsville, Texas – Major Jacob Brown
- Brownville, Maine – Francis Brown (mill owner and trader)
- Brunswick, Vermont – from one of the titles for Prince Karl Wilhelm Ferdinand of Brunswick-Lunenburg
- Bryan, Texas – William Joel Bryan
- Bryte, California – Mike Bryte (local farmer and landowner)
- Buck's Port, California – David A. Buck (founder)
- Buckfield, Maine – Abijah Buck (settler)
- Bucknell, California – Charles M. Bucknell (early settler)
- Bucksport, Maine – Colonel Jonathan Buck (grantee)
- Buels Gore, Vermont – Major Elias Buel (landholder)
- Buna, Texas – Buna Corley (cousin of the Carroll family, prominent Beaumont lumbermen and industrialists)
- Burrillville, Rhode Island – James Burrill, Jr. (state attorney general and U.S. senator)
- Buntingville, California – A.J. Bunting (merchant)
- Burbank, California – David Burbank (dentist)
- Burdell, California – Dr. Galen Burdell (dentist, landowner)
- Burkeville, California – Edwin Burke (mine owner)
- Burlington, Vermont – Richard Boyle, 3rd Earl of Burlington
- Burlington, Wisconsin – Richard Boyle, 3rd Earl of Burlington (indirectly, via Burlington, Vermont)
- Burrel, California – Cuthbert Burrel (local rancher)
- Burson, California – David S. Burson (railroad man)
- Bushnell, South Dakota – Frank E. Bushnell (landowner)
- Byron, Maine – Lord Byron (English poet)
Read more about this topic: List Of American Places Named After People