Player Draft
| Name | State | School | Class | Pos. | Year | Round | Team |
| Andrew Abbott | VA | Halifax County | 2017 | LHP | 2021 | 2 | Reds |
| Mick Abel | OR | Jesuit | 2020 | RHP | 2020 | 1 | Philadelphia Phillies |
| Philip Abner | NC | Charlotte Christian | 2021 | LHP | 2023 | 6 | Diamondbacks |
| Ben Abram | ON | Georgetown District | 2018 | RHP | 2018 | 37 | San Diego Padres |
| C.J. Abrams | GA | Blessed Trinity Catholic | 2019 | SS | 2019 | 1st | San Diego Padres |
| Juan Carlos Abreu | FL | Winter Springs | 2016 | OF | 2016 | 23 | Red Sox |
| Cohen Achen | AB | Bishop O'Byrne | 2019 | RHP | 2024 | 14 | Orioles |
| Nathan Ackenhausen | OK | Owasso | 2020 | LHP | 2024 | 10 | Royals |
| Tyler Acosta | IL | Barrington | 2018 | OF | 2018 | 39 | Diamondbacks |
| Garrett Acton | IL | Lemont | 2016 | RHP | 2016 | 35 | White Sox |
| Cory Acton | FL | American Heritage | 2018 | 2B | 2022 | 9 | Braves |
| Josh Adamczewski | IN | Lake Central | 2023 | SS | 2023 | 15 | Brewers |
| Joe Adametz | PA | Governor Mifflin | 2018 | LHP | 2022 | 14 | Tigers |
| Mark Adamiak | KS | Shawnee Mission Northwest | 2019 | RHP | 2022 | 15 | Athletics |
| Jesse Adams | OH | Toledo St. John's | 2012 | OF | 2016 | 14 | Reds |
| Blake Adams | AR | Har-Ber | 2019 | RHP | 2022 | 13 | Rockies |
| Luke Adams | IL | Hinsdale Central | 2022 | 3B | 2022 | 12 | Brewers |
| Jordyn Adams | NC | Green Hope | 2018 | OF | 2018 | 1 | Los Angeles Angels |
| Gavin Adams | FL | St John Paul II Academy | 2021 | RHP | 2024 | 8 | Pirates |
| Brett Adcock | MI | Bay City Western | 2013 | LHP | 2016 | 4 | Astros |
| Cody Adcock | AR | Arkansas | 2020 | RHP | 2023 | 13 | Reds |
| Jordon Adell | KY | Ballard | 2017 | OF | 2017 | 1st | Angels |
| Eric Adler | FL | Rockledge | 2019 | RHP | 2022 | 6 | White Sox |
| Jonah Advincula | CA | Archbishop Mitty | 2019 | SS | 2023 | 8 | Guardians |
| Joe Aeilts | IL | Champaign Central | 2016 | OF | 2019 | 14 | Rockies |
| Matt Ager | CA | Foothill | 2021 | RHP | 2024 | 6 | Pirates |
| Jake Agnos | VA | Battlefield | 2016 | LHP | 2019 | 4th | Yankees |
| Zach Agnos | VA | Battlefield | 2019 | SS | 2022 | 10 | Rockies |
| Tayler Aguilar | CO | Northridge | 2019 | OF | 2022 | 15 | Yankees |
| Devan Ahart | MI | Orchard Lake St Mary's | 2010 | OF | 2015 | 16th | Dodgers |
| Walter Ahuna III | HI | Hilo | 2020 | SS | 2023 | 4 | Giants |
| John Aiello | PA | Germantown Academy | 2015 | 3B | 2018 | 14 | Blue Jays |
| Blake Aita | GA | Woodstock | 2022 | RHP | 2024 | 6 | Red Sox |
| Max Alba | WI | Franklin | 2018 | RHP | 2018 | 39 | Angels |
| Glenn Albanese | IL | Batavia | 2017 | RHP | 2021 | 15 | Los Angeles Angels |
| Luke Albright | IN | Fishers | 2018 | RHP | 2021 | 6 | Diamondbacks |
| Mason Albright | FL | IMG Academy | 2021 | LHP | 2021 | 12 | Los Angeles Angels |
| Dash Albus | TX | Abilene-wylie | 2021 | LHP | 2024 | 19 | Royals |
| Kemp Alderman | MS | Newton Academy | 2020 | OF | 2023 | 2 | Marlins |
| Bryce Alewine | GA | East Coweta | 2023 | 3B | 2024 | 18 | Tigers |
| Blaze Alexander | FL | IMG Academy | 2018 | SS | 2018 | 11th | Arizona Diamondbacks |
| A.J. Alexy | PA | Twin Valley | 2016 | RHP | 2016 | 11 | Dodgers |
| Pedro Alfonseca | MO | North Kansas City | 2016 | OF | 2017 | 17 | Indians |
| Michael Alfonso | FL | Key West | 2021 | SS | 2021 | 17 | Texas Rangers |
| Peyton Alford | TN | Powell | 2016 | LHP | 2021 | Free Agent | Seattle Mariners |
| Matthew Allan | FL | Seminole | 2019 | RHP | 2019 | 3rd | New York Mets |
| Cameron Alldred | OH | Cincinnati Country Day | 2015 | LHP | 2018 | 24th | Pittsburgh Pirates |
| Justin Alleman | MI | Holt | 2012 | RHP | 2016 | 20 | Giants |
| Austin Allen | MO | Chaminade | 2012 | C | 2015 | 4 | Padres |
| Logan Allen | FL | IMG Academy | 2015 | LHP | 2015 | 8 | Red Sox |
| Logan Allen | FL | University | 2017 | LHP | 2017 | 16 | Orioles |
| Jay Allen | FL | John Carroll Catholic | 2021 | OF | 2021 | 1C | Cincinnati Reds |
| Chris Alleyne | PA | Springside Chestnut Hill | 2017 | SS | 2022 | 19 | Dodgers |
| Nick Allgeyer | MO | St. John Vianney | 2014 | LHP | 2018 | 12 | Blue Jays |
| Tanner Allison | MI | Portland | 2014 | OF | 2017 | 19 | Braves |
| Chase Allsup | AL | Dothan | 2021 | RHP | 2024 | 4 | Orioles |
| Angelo Altavilla | MN | Lakeville North | 2015 | 3B | 2019 | FA | Diamondbacks |
| Nick Altermatt | MN | Wabasso | 2018 | SS | 2022 | 17 | White Sox |
| Nelson Alvarez | FL | Braddock | 2016 | RHP | 2016 | 27 | Indians |
| Edgar Alvarez | FL | Boone | 2019 | 1B | 2024 | 8 | Cubs |
| Austin Amaral | FL | University Orange City | 2020 | RHP | 2023 | 16 | Nationals |
| Mike Amditis | FL | Boca Raton | 2016 | C | 2016 | 37 | Indians |
| Kyle Amendt | IA | Pleasantville | 2018 | RHP | 2023 | 9 | Diamondbacks |
| Edmond Americaan | FL | Trinity Christian Academy | 2016 | OF | 2016 | 28 | Diamondbacks |
| Billy Amick | SC | P27 Academy | 2021 | 3B | 2024 | 2 | Twins |
| Ryan Ammons | SC | Wren | 2019 | LHP | 2023 | 10 | Red Sox |
| Cole Anderson | CO | Rocky Mountain | 2015 | OF | 2015 | 10 | Rockies |
| Ian Anderson | NY | Shenendehowa | 2016 | RHP | 2016 | 1 | Braves |
| Ben Anderson | NY | Shenendehowa | 2016 | C | 2016 | 26 | Blue Jays |
| Jack Anderson | IL | Evanston | 2012 | RHP | 2016 | 23 | Mariners |
| Ethan Anderson | VA | Frank W. Cox | 2021 | C | 2024 | 2 | Orioles |
| Max Anderson | NE | Millard West | 2020 | 2B | 2023 | 2 | Tigers |
| Antonio Anderson | GA | North Atlanta | 2023 | SS | 2023 | 3 | Red Sox |
| Casey Anderson | UT | Lehi | 2020 | RHP | 2023 | 11 | Diamondbacks |
| Ryan Andrade | RI | Middletown | 2021 | RHP | 2024 | 7 | Rays |
| Ted Andrews | OH | Cincinnati Hills Christian Academy | 2012 | RHP | 2017 | 37 | White Sox |
| Tanner Andrews | IN | Tippecanoe Valley | 2014 | RHP | 2018 | 10 | Marlins |
| Isaac Anesty | ON | Our Lady Of Lourdes | 2015 | LHP | 2015 | 18 | Reds |
| Conor Angel | QC | Lakeside Academy | 2016 | RHP | 2021 | 15 | Tampa Bay Rays |
| Mack Anglin | OH | Sparta Highland | 2019 | RHP | 2022 | 7 | Royals |
| Eli Ankeney | AZ | Desert Vista | 2019 | LHP | 2022 | 20 | Mets |
| Roman Anthony | FL | Stoneman Douglas | 2022 | OF | 2022 | 2C | Red Sox |
| Sam Antonacci | IL | Sacred Heart-Griffin | 2021 | SS | 2024 | 5 | White Sox |
| Oraj Anu | FL | TNXL Academy | 2017 | OF | 2017 | 28 | Red Sox |
| Ryan Aper | IL | Lincoln Community | 2011 | OF | 2013 | 6 | Marlins |
| Jackson Appel | TX | Memorial | 2019 | C | 2024 | 6 | White Sox |
| Nathan Archer | OH | Keystone | 2021 | OF | 2024 | 12 | White Sox |
| Silas Ardoin | LA | Sam Houston | 2019 | C | 2022 | 4 | Orioles |
| Adrian Areizaga | PR | Leadership Christian School | 2024 | SS | 2024 | 14 | Reds |
| Sam Armstrong | NJ | High Point | 2019 | RHP | 2023 | 13 | Cubs |
| Bryce Arnold | ON | Blessed Trinity | 2020 | SS | 2023 | NDFA | Toronto Blue Jays |
| Chandler Arnold | TX | Horn | 2018 | RHP | 2022 | 13 | Cardinals |
| Zach Arnold | CA | Great Oak | 2019 | SS | 2019 | 34 | Orioles |
| Jeremy Arocho | MD | Old Mill | 2017 | SS | 2017 | 27 | Dodgers |
| Aiva Arquette | HI | St. Louis | 2022 | SS | 2022 | 18 | Diamondbacks |
| Edwin Arroyo | FL | Central Pointe Christian | 2021 | SS | 2021 | 2 | Seattle Mariners |
| Evan Aschenbeck | TX | Brenham | 2020 | LHP | 2024 | 13 | Cubs |
| Aaron Ashby | MO | Park Hill | 2016 | LHP | 2018 | 4 | Brewers |
| Micah Ashman | UT | Jordan | 2021 | LHP | 2024 | 11 | Tigers |
| Mason Auer | MO | Kickapoo | 2019 | RHP | 2021 | 5 | Rays |