Player Draft
| Name | State | School | Class | Pos. | Year | Round | Team |
| Davis Bradshaw | MS | McLaurin | 2017 | OF | 2018 | 11th | Marlins |
| Denny Brady | NJ | Buena | 2015 | RHP | 2017 | 7 | Los Angeles Angels |
| Braxton Bragg | MO | Liberty | 2019 | 1B | 2023 | 8 | Orioles |
| Kade Bragg | TX | Ennis | 2019 | LHP | 2023 | 17 | Twins |
| Trey Braithwaite | VA | Millbrook | 2016 | RHP | 2022 | 16 | Reds |
| Jonathan Brand | GA | Columbus | 2018 | RHP | 2022 | 8 | Red Sox |
| Connor Brandon | OH | Watkins Memorial | 2019 | RHP | 2022 | 17 | Mets |
| Jack Brannigan | IL | Marist | 2019 | RHP | 2022 | 3 | Pirates |
| Brooks Brannon | NC | Randleman | 2022 | C | 2022 | 9 | Red Sox |
| Mitch Bratt | ON | Newmarket | 2021 | LHP | 2021 | 5 | Texas Rangers |
| Ben Brecht | IL | New Trier | 2016 | LHP | 2019 | 5 | Rays |
| Brody Brecht | IA | Ankeny | 2021 | RHP | 2024 | CB-A | Rockies |
| Bradley Brehmer | IN | Decatur Central | 2018 | RHP | 2022 | 12 | Orioles |
| Dondrae Bremner | ON | Bill Crothers | 2017 | SS | 2017 | 31 | Reds |
| Tim Brennan | PA | Holy Ghost Prep | 2015 | RHP | 2018 | 7 | Rangers |
| Will Brennan | KS | Blue Valley | 2016 | RHP | 2019 | 8 | Indians |
| Jacob Brentz | MO | Parkway South | 2013 | LHP | 2013 | 11 | Blue Jays |
| Jacob Bresnahan | WA | Sumner | 2023 | LHP | 2023 | 13 | Guardians |
| Ivan Brethowr | KS | St. Thomas Aquinas | 2021 | OF | 2024 | 7 | Cubs |
| Michael Brettell | ON | E.L.Crossley Secondary School | 2015 | RHP | 2018 | 15 | St. Louis Cardinals |
| Sean Bretz | LA | John Curtis | 2016 | RHP | 2019 | 15th | Royals |
| Beau Brewer | TX | McKinney Boyd | 2020 | 3B | 2022 | 19 | Yankees |
| Michael Brewer | MO | Hillsboro | 2019 | RHP | 2019 | 32 | Rangers |
| Cody Brickhouse | FL | Sarasota | 2015 | 3B | 2015 | 15 | Giants |
| Spencer Brickhouse | NC | Bunn | 2016 | 1B | 2019 | 7 | Arizona Diamondbacks |
| Drew Bridges | MO | Carthage | 2013 | 1B | 2013 | 20 | Yankees |
| Trace Bright | AL | Trinity Presbyterian | 2019 | C | 2022 | 5 | Orioles |
| Matt Brill | IL | Moline | 2013 | OF | 2017 | 12 | Diamondbacks |
| Nick Brink | OR | Cleveland | 2020 | RHP | 2024 | 7 | Marlins |
| Clark Brinkman | IL | Immaculate Conception | 2014 | OF | 2018 | 32 | Tigers |
| Serafino Brito | NJ | Indian Hills | 2015 | RHP | 2019 | 28 | Cleveland Indians |
| Logan Britt | TX | Colleyville Heritage | 2019 | OF | 2023 | 17 | Angels |
| Zach Britton | IN | Batesville | 2017 | C | 2020 | 5 | Blue Jays |
| Rio Britton | CA | Capital Christian | 2020 | LHP | 2023 | 15 | Diamondbacks |
| Julian Brock | TX | Fulshear | 2019 | C | 2023 | 8 | Rangers |
| TJ Brock | OH | Cincinnati Country Day School | 2018 | RHP | 2022 | 6 | Blue Jays |
| Colin Brockhouse | IN | Northrop | 2014 | SS | 2017 | 24 | Blue Jays |
| Sam Brodersen | FL | West Orange | 2020 | - | 2024 | 15 | Cardinals |
| Bryan Broecker | IL | Notre Dame | 2020 | C | 2023 | 13 | Rays |
| Steven Brooks | NY | Monroe-Woodbury | 2019 | LHP | 2024 | 11 | Red Sox |
| Jake Brooks | CA | Fountain Valley | 2020 | RHP | 2023 | 11 | Marlins |
| Steve Brooks | CA | Cosumnes Oaks | 2021 | RHP | 2024 | 11 | Red Sox |
| Matthew Brosky | OH | Strongsville | 2018 | RHP | 2022 | 8 | Rangers |
| Joey Broughton | MI | Northville | 2024 | LHP | 2024 | 13 | Brewers |
| Blake Brown | IL | Normal West | 2009 | OF | 2012 | 5 | Braves |
| Zack Brown | IN | Seymour | 2013 | RHP | 2016 | 5 | Brewers |
| Cassidy Brown | OH | Walsh Jesuit | 2013 | C | 2016 | 12 | Reds |
| Nathan Brown | WI | Arrowhead | 2016 | RHP | 2016 | 40 | Yankees |
| Tyler Brown | OH | Olentangy Orange | 2017 | RHP | 2017 | 26 | Reds |
| Ben Brown | NY | Ward Melville | 2017 | RHP | 2017 | 33rd | Philadelphia Phillies |
| Jaden Brown | ON | St. Marcellinus | 2019 | SS | 2019 | 40 | Washington Nationals |
| Dasan Brown | ON | Abbey Park | 2019 | OF | 2019 | 3 | Toronto Blue Jays |
| McCade Brown | IL | Normal West | 2018 | RHP | 2021 | 3 | Colorado Rockies |
| Eric Brown | LA | Parkway | 2019 | SS | 2022 | 1 | Brewers |
| Marcus Brown | AR | Shiloh Christian | 2020 | SS | 2023 | 5 | Nationals |
| Nick Brown | VA | Patriot | 2013 | RHP | 2017 | 32 | Twins |
| Cam Brown | TX | Flower Mound | 2020 | RHP | 2023 | 10 | Phillies |
| Sam Brown | CA | Petaluma | 2020 | 1B | 2023 | 12 | Angels |
| Dawson Brown | GA | Tattnall Square Academy | 2020 | RHP | 2024 | 16 | Diamondbacks |
| Jordan Brown | CA | Serra Gardena | 2019 | SS | 2019 | 6th | Indians |
| Ryan Brown | MI | Lanse Creuse | 2020 | RHP | 2023 | 9 | Dodgers |
| Daniel Brown | NC | Needham Broughton | 2020 | LHP | 2023 | 16 | Cubs |
| Ryan Brown | OR | South Salem | 2019 | RHP | 2023 | 16 | Athletics |
| Canyon Brown | FL | Seabreeze | 2021 | C | 2024 | 9 | Royals |
| Jake Brown | LA | Sulphur | 2023 | LHP | 2023 | 16 | Rangers |
| Blake Brown | NC | North Gaston | 2016 | RHP | 2020 | Signed as UDFA | Philadelphia Phillies |
| Mark Brown Jr | MI | Detroit King | 2010 | OF | 2010 | 19th | Indians |
| Henry Brummel | IL | Pontiac | 2024 | RHP | 2024 | 20 | Brewers |
| Gavin Bruni | OH | Alliance | 2021 | LHP | 2024 | 17 | Nationals |
| Ryan Bruno | FL | American Heritage Delray | 2020 | LHP | 2023 | 7 | Diamondbacks |
| Ben Brutti | RI | South Kingstown | 2022 | RHP | 2022 | 11 | Reds |
| Hunter Bryan | CA | Redwood | 2019 | 3B | 2019 | 31 | Rangers |
| Garrison Bryant | FL | Clearwater | 2016 | RHP | 2016 | 36 | Mets |
| Tony Bucciferro | IL | Minooka | 2008 | RHP | 2012 | 14 | White Sox |
| Micah Bucknam | BC | M.E.I | 2022 | RHP | 2021 | 16 | Blue Jays |
| Jacob Bukauskas | VA | Stone Bridge | 2014 | RHP | 2017 | 1 | Astros |
| Sam Bumpers | IL | Bradley-Bourbannais | 2010 | SS | 2014 | 22 | Rockies |
| Cade Bunnell | WI | Stoughton | 2015 | SS | 2019 | 40 | Braves |
| Luke Burch | OH | Hiland | 2012 | LHP | 2017 | 9 | Tigers |
| Nick Burdi | IL | Downers Grove South | 2011 | RHP | 2014 | 2 | Twins |
| Zack Burdi | IL | Downers Grove South | 2013 | RHP | 2016 | 1 | White Sox |
| Jake Burger | MO | Christian Brothers College | 2014 | 3B | 2017 | 1 | White Sox |
| Chris Burgess | IL | St. Charles East | 2008 | RHP | 2011 | 30 | Rays |
| Garrett Burhenn | IN | Lawrence North | 2018 | RHP | 2021 | 9 | Tigers |
| Brock Burke | CO | Evergreen | 2014 | LHP | 2014 | 3 | Rays |
| Sean Burke | MA | Saint John's | 2018 | RHP | 2021 | 3 | Chicago White Sox |
| Blake Burke | CA | De La Salle | 2021 | 1B | 2024 | CB-A | Brewers |
| Jacob Burke | LA | University Lab | 2019 | 3B | 2022 | 11 | White Sox |
| Blake Burkhalter | AL | Northview | 2019 | RHP | 2022 | 2C | Braves |
| Noah Burkholder | IN | Crown Point | 2015 | RHP | 2018 | 34 | Rangers |
| Griffin Burkholder | VA | Freedom | 2024 | OF | 2024 | 2 | Phillies |
| Alec Burleson | NC | East Lincoln | 2017 | 1B | 2020 | 2 | St. Louis Cardinals |
| Grant Burleson | TN | Summertown | 2021 | RHP | 2024 | 18 | Astros |
| Jimmy Burnette | IL | St. Laurence | 2017 | LHP | 2021 | 18 | Toronto Blue Jays |
| Mason Burns | IL | Normal Community | 2020 | RHP | 2024 | 14 | Cardinals |
| Chase Burns | TN | Beech | 2021 | RHP | 2024 | 1 | Reds |
| Connor Burns | CA | Don Lugo | 2020 | C | 2023 | 5 | Reds |
| Dane Burns | TX | Prosper | 2023 | LHP | 2024 | 17 | Royals |
| Michael Busch | MN | Simley | 2016 | OF | 2019 | 1 (31st Overall | Dodgers |
| Homer Bush | TX | Carroll Senior | 2020 | OF | 2023 | 4 | Padres |