Player Draft
| Name | State | School | Class | Pos. | Year | Round | Team |
| Jake Belinda | PA | Tyrone | 2013 | RHP | 2017 | 10 | Braves |
| Tyler Bell | IL | Lincoln-Way East | 2024 | SS | 2024 | CB-B | Rays |
| Justin Bench | FL | Calvary Christian | 2018 | SS | 2022 | 17 | Giants |
| Colton Bender | CT | Lyman Memorial High School | 2017 | C | 2021 | 10 | San Diego Padres |
| Derek Bender | SC | St. James | 2021 | 1B | 2024 | 6 | Twins |
| Kelvin Bender | CA | Serra | 2019 | LHP | 2019 | 17 | Brewers |
| Carmen Benedetti | MI | Grosse Pointe South | 2013 | 1B | 2016 | 12 | Astros |
| Carson Benge | OK | Yukon | 2021 | OF | 2024 | 1 | Mets |
| Andrew Benintendi | OH | Maderia | 2013 | OF | 2015 | 1st | Boston Red Sox |
| Wes Benjamin | IL | St. Charles East | 2011 | LHP | 2014 | 5 | Rangers |
| Nick Bennett | OH | Moeller | 2016 | LHP | 2016 | 40 | Giants |
| Isaiah Bennett | NC | Pine Forest | 2019 | RHP | 2019 | 36 | San Diego Padres |
| Jake Bennett | OK | Bixby | 2019 | LHP | 2022 | 2 | Nationals |
| Pierce Bennett | MD | Gilman | 2019 | SS | 2023 | 20 | Phillies |
| Tyler Benninghoff | MO | Rockhurst | 2016 | RHP | 2016 | 11 | Twins |
| Trey Benton | NC | West Columbus | 2015 | RHP | 2019 | 15 | Cleveland Indians |
| Jesse Berardi | NY | Commack | 2014 | SS | 2017 | 10 | Indians |
| Derek Berg | TX | Conroe | 2020 | C | 2024 | 10 | Pirates |
| Ryan Bergert | OH | GlenOak | 2018 | RHP | 2021 | 6 | San Diego Padres |
| Austin Bergner | FL | Windermere Prep | 2016 | RHP | 2016 | 38 | Red Sox |
| Jacob Berry | AZ | Queen Creek | 2020 | OF | 2022 | 1 | Marlins |
| Jay Beshears | FL | Community School of Naples | 2020 | SS | 2023 | 6 | Padres |
| Cuba Bess | CO | Fruita Monument | 2016 | 1B | 2016 | 39 | Rockies |
| Alec Bettinger | VA | Hylton | 2013 | RHP | 2017 | 10 | Brewers |
| Sal Biasi | PA | Hazleton Area | 2014 | RHP | 2017 | 11 | Royals |
| Dante Biasi | PA | Hazleton Area | 2016 | LHP | 2019 | 6 | Royals |
| Tanner Bibee | CA | Mission Viejo | 2017 | RHP | 2021 | 5 | CLE |
| Bo Bichette | FL | Lakewood | 2016 | 3B | 2016 | 2 | Blue Jays |
| Nick Biddison | VA | St. Christopher's | 2018 | SS | 2022 | 4 | Dodgers |
| Michael Bienlien | VA | Great Bridge | 2016 | RHP | 2019 | 24th | Tigers |
| Gabe Bierman | IN | Jeffersonville | 2018 | RHP | 2021 | 7 | Marlins |
| Zachary Biermann | WI | West Bend East | 2015 | 1B | 2019 | 23 | Astros |
| Justice Bigbie | VA | Grassfield | 2017 | 1B | 2021 | 19 | Tigers |
| Greg Billo | IL | Sandburg | 2008 | RHP | 2008 | 28 | Royals |
| Jacob Bimbi | IL | Crystal Lake South | 2020 | LHP | 2024 | 11 | Pirates |
| Alex Binelas | WI | Oak Creek | 2018 | 1B | 2021 | 3 | Milwaukee Brewers |
| Mac Bingham | CA | Torrey Pines | 2019 | OF | 2019 | 40th | Cubs |
| Ryan Birchard | NY | Auburn | 2021 | RHP | 2023 | 5 | Brewers |
| Brandon Birdsell | TX | Conroe | 2018 | RHP | 2022 | 5 | Cubs |
| Hayden Birdsong | IL | Mattoon | 2019 | RHP | 2022 | 6 | Giants |
| Reid Birlingmair | IL | Normal West | 2015 | SS | 2018 | 28 | Athletics |
| Braylon Bishop | AR | Arkansas | 2021 | OF | 2021 | 14 | Pirates |
| Eric Bitonti | CA | Aquinas | 2023 | 3B | 2023 | 3 | Brewers |
| Nick Bitsko | PA | Central Bucks East | 2020 | RHP | 2020 | 1 | Rays |
| Jake Bivens | MI | Battle Creek Lakeview | 2014 | SS | 2017 | 27 | Tigers |
| Tyler Black | ON | St. Andrews | 2018 | 2B | 2021 | 1 | Milwaukee Brewers |
| Mason Black | PA | Valley View | 2018 | RHP | 2021 | 3 | Giants |
| Nick Blackburn | IL | Neuqua Valley | 2012 | RHP | 2016 | 16 | Diamondbacks |
| Bradley Blalock | GA | Grayson | 2019 | RHP | 2019 | 32 | Boston Red Sox |
| Travis Blankenhorn | PA | Pottsville Area | 2015 | SS | 2015 | 3 | Twins |
| Nathan Blasick | PA | Halifax Area | 2020 | 3B | 2024 | 19 | Rockies |
| Brock Blatter | MT | Billings Central Catholic | 2022 | RHP | 2022 | 19 | Cubs |
| Adam Bleday | PA | Titusville | 2013 | LHP | 2017 | 27 | Astros |
| JJ Bleday | FL | Mosley | 2016 | OF | 2016 | 39 | Padres |
| Scott Blewett | NY | Charles W Baker | 2014 | RHP | 2014 | 2 | Royals |
| Ryan Bliss | GA | Troup County | 2018 | SS | 2018 | 30th | Red Sox |
| Tyler Blohm | MD | Archbishop Spalding | 2016 | LHP | 2016 | 17 | Orioles |
| Jake Bloss | NC | Grimsley | 2019 | RHP | 2023 | 3 | Astros |
| AJ Blubaugh | OH | Clear Fork | 2019 | RHP | 2022 | 7 | Astros |
| Joshua Blum | TX | Emery/Weiner | 2021 | RHP | 2024 | 16 | Mets |
| Scott Boches | PA | Archbishop Wood | 2013 | RHP | 2017 | 30 | Mariners |
| Austin Bodrato | NJ | St. Joseph's Regional | 2016 | RHP | 2016 | 24 | Pirates |
| Jeff Boehm | IL | Mount Carmel | 2011 | OF | 2015 | 13 | Angels |
| Bryce Boettcher | OR | South Eugene | 2020 | SS | 2024 | 13 | Astros |
| Mike Boeve | NE | Hastings | 2020 | 3B | 2023 | 2 | Brewers |
| Branden Boggetto | IL | Providence Catholic | 2012 | SS | 2016 | 25 | Nationals |
| A.J. Bogucki | PA | Boyertown Area | 2013 | RHP | 2016 | 8 | Nationals |
| Cody Bohanek | IL | Marist | 2013 | SS | 2017 | 30 | Astros |
| Jace Bohrofen | OK | Westmoore | 2020 | OF | 2023 | 6 | Blue Jays |
| Caleb Bolden | TX | Pleasant Grove | 2017 | RHP | 2022 | 7 | Red Sox |
| Henry Bolte | CA | Palo Alto | 2022 | OF | 2022 | 2 | OAK |
| Brett Bond | MO | Westminster Christian | 2014 | C | 2017 | 23 | Astros |
| Aaron Bond | IN | Clay High School | 2015 | OF | 2017 | 12 | Giants |
| Bo Bonds | FL | Suwannee | 2019 | RHP | 2022 | 13 | Blue Jays |
| Caleb Bonemer | MI | Okemos | 2024 | SS | 2024 | 2 | White Sox |
| Paul Bonzagni | TX | Southlake Carroll | 2020 | RHP | 2023 | 12 | Rangers |
| Timmy Borden | IN | Providence | 2018 | SS | 2022 | 16 | Astros |
| Matthew Borens | IL | Peotone | 2011 | RHP | 2014 | 11 | Yankees |
| Joshua Bortka | KS | Turner | 2018 | RHP | 2022 | 16 | Phillies |
| Ryan Borucki | IL | Mundelein | 2012 | LHP | 2012 | 15 | Blue Jays |
| Ethan Bosacker | MN | Monticello | 2019 | RHP | 2023 | 13 | Royals |
| Jacob Bosiokovic | OH | Delaware Hayes | 2012 | 3B | 2016 | 19 | Rockies |
| Julian Bosnic | FL | Berkely Prep | 2018 | LHP | 2022 | 14 | Pirates |
| Brandon Bossard | IL | Nazareth | 2016 | SS | 2016 | 31 | White Sox |
| Austin Bossart | IL | O'Fallon | 2011 | C | 2015 | 14 | Phillies |
| Joshua Bostick | TX | McKinney | 2020 | RHP | 2023 | 8 | Giants |
| Alex Bouchard | PA | Germantown Academy | 2021 | SS | 2024 | 14 | Red Sox |
| Adam Boucher | NJ | St. Joseph's Metuchen | 2020 | RHP | 2023 | 10 | Rays |
| Kristofer Bow | NV | Centennial | 2019 | RHP | 2022 | 14 | Yankees |
| Ben Bowden | MA | Lynn English | 2013 | LHP | 2016 | 2 | Rockies |
| Jase Bowen | OH | Central Catholic | 2019 | OF | 2019 | 11th | Pittsburgh Pirates |
| Darren Bowen | NC | Red Springs | 2019 | RHP | 2022 | 13 | Cardinals |
| Hunter Bowling | FL | American Heritage | 2015 | LHP | 2015 | 39 | Giants |
| Drew Bowser | CA | Harvard-Westlake | 2020 | 3B | 2023 | 20 | Cubs |
| Riley Boyd | MO | El Dorado Springs | 2017 | RHP | 2019 | 28 | Royals |
| Justin Boyd | CO | Legend | 2019 | OF | 2022 | CBB | Reds |
| Jeremiah Boyd | NC | Hickory Ridge | 2018 | C | 2018 | 35 | Boston Red Sox |
| Emaarion Boyd | MS | South Panola High School | 2022 | OF | 2022 | 11 | Phillies |
| Enrique Bradfield Jr | FL | American Heritage Plantation | 2020 | OF | 2023 | 1 | Orioles |
| Taj Bradley | GA | Redan | 2018 | OF | 2018 | 5th | Rays |