This is a list of the most common male names starting with the letter B, based on people currently estimated to be alive in the United States as of 2021.
| Name | People | Average Age |
|---|---|---|
| Brian | 1,055,910 | 43.3 |
| Brandon | 740,532 | 27.9 |
| Benjamin | 687,620 | 26.7 |
| Bryan | 356,818 | 35.1 |
| Bradley | 281,122 | 38.5 |
| Bruce | 265,460 | 59.1 |
| Billy | 211,585 | 58.2 |
| Bobby | 194,893 | 57.0 |
| Blake | 175,227 | 20.8 |
| Brett | 147,923 | 37.3 |
| Barry | 135,714 | 58.3 |
| Brayden | 126,979 | 10.9 |
| Brent | 124,745 | 43.4 |
| Bryce | 114,657 | 19.8 |
| Brady | 88,022 | 19.9 |
| Brendan | 87,379 | 25.9 |
| Bernard | 78,342 | 58.9 |
| Bill | 76,107 | 64.9 |
| Brody | 74,197 | 11.5 |
| Brad | 72,804 | 48.5 |
| Bryson | 72,064 | 11.2 |
| Byron | 58,139 | 43.5 |
| Braxton | 55,619 | 10.8 |
| Bentley | 51,473 | 7.7 |
| Bennett | 48,090 | 13.5 |
| Beau | 46,615 | 16.2 |
| Bryant | 45,553 | 32.1 |
| Braden | 44,660 | 18.0 |
| Bob | 41,501 | 66.9 |
| Brock | 40,722 | 24.1 |
| Ben | 40,026 | 46.5 |
| Brooks | 36,423 | 14.4 |
| Brennan | 31,759 | 19.3 |
| Benny | 28,620 | 54.0 |
| Brantley | 27,776 | 8.1 |
| Bret | 26,863 | 44.0 |
| Branden | 26,588 | 26.7 |
| Blaine | 25,926 | 33.9 |
| Bradford | 25,381 | 48.5 |
| Brenden | 24,988 | 20.5 |
| Barrett | 24,515 | 15.3 |
| Bennie | 22,062 | 61.2 |
| Beckett | 20,460 | 5.8 |
| Bailey | 19,329 | 17.7 |
| Brendon | 19,285 | 25.0 |
| Braylon | 17,065 | 10.1 |
| Brayan | 15,066 | 13.6 |
| Brenton | 13,850 | 29.6 |
| Brice | 13,735 | 27.7 |
| Braydon | 13,695 | 13.2 |
| Braeden | 13,278 | 15.2 |
| Bryon | 13,134 | 43.2 |
| Bart | 12,750 | 54.5 |
| Brycen | 12,565 | 10.3 |
| Boyd | 12,495 | 54.9 |
| Buddy | 12,410 | 57.7 |
| Beckham | 12,157 | 4.7 |
| Bo | 11,927 | 18.9 |
| Braylen | 11,320 | 7.9 |
| Blair | 11,200 | 29.8 |
| Bert | 11,148 | 61.0 |
| Bruno | 10,737 | 25.2 |
| Benito | 10,529 | 37.8 |
| Benson | 10,019 | 17.3 |
| Brodie | 9,994 | 15.5 |
| Billie | 9,659 | 61.2 |
| Bodhi | 9,537 | 4.9 |
| Bronson | 9,396 | 19.6 |
| Bernardo | 9,040 | 30.5 |
| Bowen | 8,852 | 9.0 |
| Brennen | 8,759 | 19.1 |
| Bradly | 8,688 | 35.3 |
| Brant | 8,674 | 35.0 |
| Boston | 8,656 | 10.6 |
| Broderick | 8,290 | 27.1 |
| Burton | 7,811 | 59.0 |
| Bobbie | 7,502 | 59.9 |
| Blaise | 7,433 | 20.6 |
| Braiden | 7,304 | 12.9 |
| Branson | 7,187 | 14.0 |
| Benton | 7,126 | 27.9 |
| Blaze | 7,041 | 14.2 |
| Barney | 6,327 | 62.0 |
| Barton | 5,943 | 55.7 |
| Baron | 5,907 | 30.3 |
| Baby | 5,875 | 26.6 |
| Benedict | 5,792 | 33.4 |
| Britton | 5,665 | 24.7 |
| Brandt | 5,593 | 27.5 |
| Basil | 5,575 | 44.5 |
| Baylor | 5,573 | 7.3 |
| Briggs | 5,520 | 6.4 |
| Brandan | 5,478 | 27.9 |
| Bridger | 5,414 | 12.2 |
| Bilal | 5,076 | 17.9 |
| Bernie | 5,007 | 57.8 |
| Bishop | 4,985 | 17.1 |
| Bodie | 4,816 | 9.9 |
| Briar | 4,759 | 9.0 |
| Brandyn | 4,599 | 25.3 |