MLB Players with Last Names Starting with "J"
| Player | Pos | Height / Weight | Birth Date (Age) | College |
|---|---|---|---|---|
| Matt Jachec CLE | RP | 6' 0" / 205 lbs | Jul 25, 2001 (22) | Indiana State |
| Edwin Jackson | SP | 6' 2" / 215 lbs | Sep 9, 1983 (40) | None |
| Austin Jackson | CF | 6' 1" / 198 lbs | Feb 1, 1987 (37) | - |
| Luke Jackson SF | RP | 6' 2" / 210 lbs | Aug 24, 1991 (32) | None |
| Zach Jackson | P | 6' 4" / 215 lbs | May 13, 1983 (40) | Texas A&M |
| Jay Jackson MIN | RP | 6' 1" / 195 lbs | Oct 27, 1987 (36) | Furman |
| Alex Jackson TB | C | 6' 2" / 238 lbs | Dec 25, 1995 (28) | None |
| Drew Jackson | SS | 6' 2" / 200 lbs | Jul 28, 1993 (30) | Stanford |
| Joe Jackson TEX | LF | 6' 1" / 180 lbs | May 5, 1992 (31) | The Citadel |
| Jeremiah Jackson NYM | SS | 6' 0" / 165 lbs | Mar 26, 2000 (24) | None |
| Andre Jackson | SP | 6' 3" / 210 lbs | May 1, 1996 (27) | Utah |
| Jordan Jackson SEA | SP | 6' 6" / 204 lbs | Oct 14, 1998 (25) | Georgia Southern |
| Zach Jackson OAK | RP | 6' 4" / 230 lbs | Dec 25, 1994 (29) | Arkansas |
| Christian Jackson ATL | LF | 6' 2" / 185 lbs | Oct 23, 2003 (20) | None |
| Gabriel Jackson BOS | P | 6' 2" / 180 lbs | Sep 7, 2001 (22) | None |
| Alek Jacob SD | RP | 6' 3" / 190 lbs | Jun 16, 1998 (25) | Gonzaga |
| Carson Jacobs CHW | RP | 6' 9" / 215 lbs | Aug 17, 2001 (22) | North Dakota State |
| Zach Jacobs CLE | P | 6' 1" / 170 lbs | Sep 9, 2001 (22) | UC Riverside |
| Sam Jacobsak | SP | 6' 5" / 200 lbs | Jun 11, 1998 (25) | Northeastern |
| Lucas Jacobsen | RP | 6' 5" / 190 lbs | Jul 1, 1995 (28) | Long Beach State |
| Tanner Jacobson STL | RP | 6' 1" / 190 lbs | Jan 24, 2000 (24) | Queens (NC) |
| Joe Jacques ARI | RP | 6' 4" / 210 lbs | Mar 11, 1995 (29) | Manhattan |
| Kim Jae-Hwan | - | - / - | - | - |
| Mac James | C | 6' 1" / 215 lbs | Jun 2, 1993 (30) | Oklahoma |
| Josh James STL | SP | 6' 3" / 234 lbs | Mar 8, 1993 (31) | Western Oklahoma State College |
| Michael James | SS | 5' 11" / 170 lbs | Dec 4, 2001 (22) | None |
| Lyonell James BOS | 3B | 6' 3" / 165 lbs | Oct 14, 2002 (21) | None |
| Kamren James TB | 3B | 6' 2" / 205 lbs | May 25, 2000 (23) | Mississippi State |
| Drey Jameson ARI | SP | 6' 0" / 165 lbs | Aug 17, 1997 (26) | Ball State |
| Justin Janas ATL | 1B | 6' 3" / 205 lbs | Sep 18, 2000 (23) | Illinois |
| Hyun-Seok Jang LAD | SP | 6' 4" / 200 lbs | Mar 14, 2004 (20) | None |
| Thomas Jankins | SP | 6' 3" / 220 lbs | Jul 2, 1995 (28) | Quinnipiac |
| Travis Jankowski TEX | LF | 6' 2" / 190 lbs | Jun 15, 1991 (32) | SUNY Stony Brook |
| Mickey Jannis | SP | 5' 9" / 195 lbs | Dec 16, 1987 (36) | Cal State Bakersfield |
| Kenley Jansen BOS | RP | 6' 5" / 265 lbs | Sep 30, 1987 (36) | None |
| Danny Jansen TOR | C | 6' 2" / 215 lbs | Apr 15, 1995 (29) | None |
| Ryan January LAD | C | 6' 4" / 200 lbs | May 27, 1997 (26) | San Jacinto JC (TX) |
| Mason Janvrin | CF | 6' 2" / 180 lbs | Mar 3, 1998 (26) | Central Missouri |
| Rubendy Jaquez | 3B | 5' 11" / 174 lbs | Feb 13, 1999 (25) | None |
| Ernesto Jaquez CHW | SP | 6' 2" / 190 lbs | Jun 11, 1999 (24) | None |
| Dariel Jaquez MIL | P | 6' 1" / 170 lbs | Dec 15, 2006 (17) | None |
| Branlyn Jaraba | SS | 6' 2" / 196 lbs | Mar 20, 2002 (22) | None |
| Zach Jarrett | RF | 6' 4" / 220 lbs | Dec 8, 1994 (29) | Charlotte |
| Bryce Jarvis ARI | RP | 6' 2" / 195 lbs | Dec 26, 1997 (26) | Duke |
| Mike Jarvis PIT | SS | 5' 10" / 180 lbs | May 12, 1998 (25) | San Diego State |
| Justin Jarvis NYM | SP | 6' 2" / 183 lbs | Feb 20, 2000 (24) | None |
| Jim Jarvis DET | SS | 5' 10" / 190 lbs | Nov 6, 2000 (23) | Alabama |
| John Jaso | RF | 6' 2" / 202 lbs | Sep 19, 1983 (40) | - |
| Cristian Jauregui PIT | OF | 5' 11" / 180 lbs | Feb 9, 2006 (18) | None |
| Wander Javier | SS | 6' 1" / 165 lbs | Dec 29, 1998 (25) | None |
| Cristian Javier HOU | SP | 6' 1" / 210 lbs | Mar 26, 1997 (27) | None |
| Joshua Javier TEX | P | 6' 3" / 195 lbs | Dec 16, 1998 (25) | None |
| Sebastian Javier TB | SP | 6' 1" / 185 lbs | Dec 26, 2003 (20) | None |
| Odalvi Javier | RP | 6' 0" / 180 lbs | Sep 4, 1996 (27) | None |
| Chase Jaworsky HOU | SS | 6' 1" / 170 lbs | Jul 31, 2004 (19) | None |
| Griffin Jax MIN | RP | 6' 2" / 195 lbs | Nov 22, 1994 (29) | Air Force |
| Jon Jay | CF | 5' 11" / 195 lbs | Mar 15, 1985 (39) | Miami (FL) |
| Tyler Jay NYM | RP | 6' 1" / 185 lbs | Apr 19, 1994 (30) | Illinois |
| Daniel Jean | RP | 6' 1" / 185 lbs | Mar 24, 2003 (21) | None |
| Yanki Jean-Baptiste CLE | SS | 5' 11" / 185 lbs | Nov 18, 2004 (19) | None |
| Trey Jeans | RP | 5' 10" / 195 lbs | Jan 31, 1996 (28) | Louisiana-Monroe |
| Mitch Jebb PIT | SS | 6' 1" / 185 lbs | May 13, 2002 (21) | Michigan State |
| Daulton Jefferies SF | SP | 6' 0" / 182 lbs | Aug 2, 1995 (28) | California |
| Ryan Jeffers MIN | C | 6' 4" / 235 lbs | Jun 3, 1997 (26) | UNC Wilmington |
| Chris Jefferson SEA | RP | 6' 2" / 200 lbs | Jan 24, 1997 (27) | New Mexico State |
| Jeremy Jeffress | RP | 6' 0" / 205 lbs | Sep 21, 1987 (36) | None |
| Madison Jeffrey LAD | RP | 6' 0" / 190 lbs | Mar 14, 2000 (24) | West Virginia |
| Greyson Jenista | RF | 6' 4" / 210 lbs | Dec 7, 1996 (27) | Wichita State |
| Brandon Jenkins CHW | P | 6' 1" / 205 lbs | Oct 2, 1998 (25) | Seattle |
| Bryce Jenkins NYM | RP | 5' 11" / 175 lbs | Apr 3, 2001 (23) | Tennessee |
| Walker Jenkins MIN | OF | 6' 3" / 210 lbs | Feb 19, 2005 (19) | None |
| Dan Jennings | RP | 6' 3" / 210 lbs | Apr 17, 1987 (37) | Nebraska |
| Steven Jennings TEX | SP | 6' 2" / 175 lbs | Nov 13, 1998 (25) | None |
| Ryan Jennings TOR | RP | 6' 0" / 190 lbs | Jun 23, 1999 (24) | Louisiana Tech |
| Ryan Jensen MIN | SP | 6' 0" / 190 lbs | Nov 23, 1997 (26) | Fresno State |
| Wil Jensen SF | RP | 6' 4" / 180 lbs | Sep 2, 1997 (26) | Pepperdine |
| Carter Jensen KC | C | 6' 1" / 210 lbs | Jul 3, 2003 (20) | None |
| Cheol Won Jeong | P | 6' 4" / 209 lbs | - | - |
| Williams Jerez | SP | 6' 4" / 205 lbs | May 16, 1992 (31) | None |
| Miguel Jerez | C | 6' 1" / 178 lbs | Oct 24, 1997 (26) | None |
| Albert Jerez | SS | 6' 2" / 165 lbs | May 18, 2001 (22) | None |
| Anderson Jerez LAD | RP | 5' 10" / 185 lbs | Jul 19, 2004 (19) | None |
| Elvis Jerez CLE | RP | 6' 4" / 185 lbs | Feb 5, 2000 (24) | None |
| Derek Jeter | SS | 6' 3" / 182 lbs | Jun 26, 1974 (49) | - |
| Bud Jeter | RP | 6' 3" / 205 lbs | Oct 27, 1991 (32) | Presbyterian (SC) |
| Tommy Jew STL | CF | 6' 1" / 185 lbs | Oct 26, 1997 (26) | UC Santa Barbara |
| Jake Jewell | RP | 6' 2" / 217 lbs | May 16, 1993 (30) | Northeastern Oklahoma A&M |
| Jin-De Jhang | C | 5' 9" / 215 lbs | May 17, 1993 (30) | None |
| Ubaldo Jiménez | SP | 6' 5" / 210 lbs | Jan 22, 1984 (40) | None |
| Luis Jimenez | 3B | 6' 1" / 205 lbs | Jan 18, 1988 (36) | None |
| A.J. Jimenez | C | 6' 0" / 192 lbs | May 1, 1990 (33) | - |
| Eloy Jiménez CHW | DH | 6' 4" / 250 lbs | Nov 27, 1996 (27) | None |
| Joe Jiménez ATL | RP | 6' 3" / 277 lbs | Jan 17, 1995 (29) | None |
| Anthony Jimenez | CF | 5' 11" / 165 lbs | Oct 21, 1995 (28) | None |
| Eduardo Jiménez | RP | 6' 2" / 215 lbs | Apr 4, 1995 (29) | None |
| Melvin Jimenez LAD | P | 6' 0" / 170 lbs | Jul 23, 1999 (24) | None |
| Leo Jimenez TOR | SS | 5' 10" / 215 lbs | May 17, 2001 (22) | None |
| Gilberto Jimenez BOS | CF | 5' 11" / 212 lbs | Jul 8, 2000 (23) | None |
| Dany Jiménez OAK | RP | 6' 1" / 182 lbs | Dec 23, 1993 (30) | None |
| Francisco Jimenez | RP | 6' 1" / 160 lbs | Oct 4, 1994 (29) | None |
| Joe Jimenez | C | 5' 10" / 185 lbs | Feb 22, 1998 (26) | Chapman (CA) |
| Hector Jimenez | CF | 5' 11" / 155 lbs | Feb 8, 2004 (20) | None |
| Sebastian Jimenez LAD | C | 6' 4" / 207 lbs | Mar 23, 2002 (22) | Florida State |
| Jhonny Jimenez LAD | RP | 6' 5" / 180 lbs | Nov 9, 2003 (20) | None |
| Humberto Jimenez TB | P | 6' 2" / 174 lbs | Sep 29, 2001 (22) | None |
| Jesus Jimenez | RP | 6' 2" / 185 lbs | Oct 2, 2002 (21) | None |
| Carlos Jimenez CHW | 1B | 6' 4" / 220 lbs | Feb 3, 2002 (22) | None |
| Argenis Jimenez | LF | 5' 11" / 160 lbs | Apr 21, 2003 (21) | None |
| Damian Jimenez KC | RP | 6' 5" / 190 lbs | Sep 21, 2004 (19) | None |
| Cristian Jimenez WSH | SP | 6' 2" / 180 lbs | May 16, 2004 (19) | None |
| Enrique Jimenez DET | C | 5' 10" / 170 lbs | Nov 3, 2005 (18) | None |
| Damian Jimenez KC | RP | 6' 5" / 190 lbs | Sep 21, 2004 (19) | None |
| Linbel Jimenez MIL | SP | 6' 5" / 198 lbs | Oct 26, 2004 (19) | None |
| Jhomber Jimenez TB | SP | 6' 3" / 198 lbs | Dec 24, 2005 (18) | None |
| Jeison Jimenez SF | RP | 6' 6" / 233 lbs | Sep 11, 2003 (20) | None |
| Ibrahyn Jimenez SD | P | 6' 1" / 170 lbs | Feb 19, 2007 (17) | None |
| Anderson Jimenez SEA | P | 6' 0" / 160 lbs | Aug 3, 2007 (16) | None |
| Edgar Jimenez NYY | C | 5' 10" / 165 lbs | Nov 3, 2006 (17) | None |
| Antonio Jimenez TB | RP | 5' 11" / 145 lbs | May 6, 2001 (22) | None |
| Edwin Jimenez MIL | RP | 6' 3" / 175 lbs | Dec 12, 2001 (22) | None |
| Estibenzon Jimenez PHI | P | 6' 1" / 172 lbs | Jan 25, 2002 (22) | None |
| Carlos Jimenez SEA | CF | 5' 10" / 170 lbs | Feb 14, 2003 (21) | None |
| Eikel Joaquin WSH | 2B | 5' 10" / 155 lbs | Nov 14, 2005 (18) | None |
| Jackson Jobe DET | SP | 6' 2" / 190 lbs | Jul 30, 2002 (21) | None |
| Brayden Jobert STL | DH | 6' 2" / 209 lbs | Nov 14, 2000 (23) | Louisiana State |
| Connor Joe PIT | RF | 6' 0" / 205 lbs | Aug 16, 1992 (31) | San Diego |
| Elison Joesph ATL | RP | 6' 0" / 170 lbs | Jan 24, 2001 (23) | None |
| Pierce Johnson ATL | RP | 6' 2" / 202 lbs | May 10, 1991 (32) | Missouri State |
| Sherman Johnson | 2B | 5' 10" / 190 lbs | Jul 15, 1990 (33) | Florida State |
| Brian Johnson | SP | 6' 4" / 235 lbs | Dec 7, 1990 (33) | Florida |
| DJ Johnson | RP | 6' 4" / 230 lbs | Aug 30, 1989 (34) | Western Oregon |
| Kyle Johnson OAK | CF | 5' 10" / 195 lbs | Nov 9, 1989 (34) | Washington State |
| Chase Johnson | RP | 6' 4" / 192 lbs | Jan 9, 1992 (32) | Cal Poly San Luis Obispo |
| Michael Johnson | RP | 6' 1" / 185 lbs | Jan 3, 1991 (33) | None |
| Daniel Johnson BAL | RF | 5' 10" / 200 lbs | Jul 11, 1995 (28) | New Mexico State |
| Tyler Johnson | RP | 6' 2" / 205 lbs | Aug 21, 1995 (28) | South Carolina |
| Bryce Johnson SD | CF | 6' 1" / 195 lbs | Oct 27, 1995 (28) | Sam Houston State |
| Osiris Johnson MIA | SS | 6' 1" / 200 lbs | Oct 18, 2000 (23) | None |
| Cobi Johnson TOR | SP | 6' 4" / 225 lbs | Nov 6, 1995 (28) | Florida State |
| Kaleo Johnson | DH | - / - | - | - |
| Seth Johnson BAL | SP | 6' 1" / 205 lbs | Sep 19, 1998 (25) | Campbell |
| Ivan Johnson CIN | 2B | 6' 0" / 190 lbs | Oct 11, 1998 (25) | Chipola JC (FL) |
| Cooper Johnson TEX | C | 6' 0" / 215 lbs | Apr 25, 1998 (25) | Mississippi |
| Colton Johnson OAK | RP | 6' 4" / 222 lbs | Jul 28, 1998 (25) | Illinois State |
| Kyle Johnson | RP | 6' 4" / 220 lbs | Sep 19, 1993 (30) | Purdue |
| Christian Johnson | RF | 5' 11" / 180 lbs | Jun 4, 2001 (22) | None |
| Termarr Johnson PIT | 2B | 5' 7" / 175 lbs | Jun 11, 2004 (19) | None |
| Preston Johnson BAL | RP | 6' 4" / 250 lbs | Mar 11, 2000 (24) | Mississippi State |
| Marques Johnson SF | P | 6' 2" / 210 lbs | Jul 4, 2000 (23) | Long Beach State |
| Marcus Johnson TB | SP | 6' 6" / 200 lbs | Dec 11, 2000 (23) | Duke |
| M.D. Johnson MIA | SP | 6' 5" / 190 lbs | Jul 7, 1997 (26) | Dallas Baptist |
| Brett Johnson ARI | LF | 5' 11" / 195 lbs | Jan 6, 2000 (24) | Southern Illinois-Edwardsville |
| Kyle Johnson CHC | P | 6' 4" / 220 lbs | Sep 19, 1993 (30) | - |
| Dom Johnson DET | LF | 5' 9" / 185 lbs | Mar 7, 2001 (23) | Kansas State |
| Brandon Johnson KC | RP | 6' 0" / 195 lbs | Jun 12, 1999 (24) | Mississippi |
| Ryan Johnson HOU | 2B | 6' 0" / 175 lbs | Dec 27, 2000 (23) | Pepperdine |
| Ty Johnson CHC | P | 6' 6" / 205 lbs | Sep 25, 2001 (22) | Ball State |
| Justin Johnson KC | SS | 5' 11" / 185 lbs | Apr 3, 2000 (24) | Wake Forest |
| Bjorn Johnson MIL | SP | 6' 3" / 201 lbs | Jan 11, 2005 (19) | None |
| Jared Johnson ATL | P | 6' 2" / 225 lbs | Mar 15, 2001 (23) | None |
| Kyle Johnston COL | RP | 5' 11" / 218 lbs | Jul 17, 1996 (27) | Texas |
| Reid Johnston CLE | SP | 6' 3" / 218 lbs | Apr 7, 1999 (25) | North Carolina State |
| Troy Johnston MIA | 1B | 6' 0" / 205 lbs | Jun 22, 1997 (26) | Gonzaga |
| Will Johnston OAK | P | 6' 3" / 215 lbs | Dec 12, 2000 (23) | Texas A&M |
| Connor Johnstone | RP | 6' 1" / 195 lbs | Oct 4, 1994 (29) | Wake Forest |
| Adam Jones | RF | 6' 2" / 215 lbs | Aug 1, 1985 (38) | None |
| Nate Jones | RP | 6' 5" / 220 lbs | Jan 28, 1986 (38) | Northern Kentucky |
| James Jones | RP | 6' 3" / 205 lbs | Sep 24, 1988 (35) | Long Island |
| Hunter Jones | P | - / - | Aug 17, 1991 (32) | Florida State |
| JaCoby Jones | CF | 6' 2" / 201 lbs | May 10, 1992 (31) | Louisiana State |
| Ryder Jones | 3B | 6' 2" / 221 lbs | Jun 7, 1994 (29) | None |
| Jahmai Jones NYY | 2B | 5' 11" / 210 lbs | Aug 4, 1997 (26) | None |
| Connor Jones | SP | 6' 3" / 220 lbs | Oct 10, 1994 (29) | Virginia |
| Nolan Jones COL | LF | 6' 4" / 195 lbs | May 7, 1998 (25) | None |
| Thomas Jones | OF | 6' 4" / 195 lbs | Dec 9, 1997 (26) | None |
| Mylz Jones | 3B | 6' 1" / 185 lbs | Apr 13, 1994 (30) | Cal State Bakersfield |
| Taylor Jones | 1B | 6' 7" / 230 lbs | Dec 6, 1993 (30) | Gonzaga |
| Travis Jones | 1B | 6' 4" / 210 lbs | Sep 29, 1995 (28) | Texas |
| Spencer Jones | SP | - / - | Sep 22, 1994 (29) | - |
| Greg Jones COL | SS | 6' 0" / 175 lbs | Mar 7, 1998 (26) | UNC-Wilmington |
| Brock Jones | RP | 6' 1" / 180 lbs | Jun 14, 2001 (22) | None |
| Damon Jones | RP | 6' 5" / 233 lbs | Sep 30, 1994 (29) | Washington State |
| Jared Jones PIT | SP | 6' 1" / 190 lbs | Aug 6, 2001 (22) | None |
| Joe Jones TOR | RP | 6' 5" / 245 lbs | Jul 22, 1995 (28) | Maryville JC (TN) |
| Nick Jones LAA | RP | 6' 6" / 209 lbs | Jan 22, 1999 (25) | Georgia Southern |
| Hayden Jones CIN | C | 6' 0" / 215 lbs | Apr 27, 2000 (23) | Illinois State |
| Holt Jones MIA | SP | 6' 8" / 235 lbs | May 8, 1999 (24) | Kentucky |
| Jordan Jones CLE | RP | 6' 2" / 195 lbs | Oct 2, 1997 (26) | Washington |
| Stephen Jones COL | RP | 6' 4" / 195 lbs | Jul 30, 1997 (26) | Samford |
| Nate Jones NYM | RP | 6' 1" / 200 lbs | Jan 6, 1997 (27) | Northwestern State |
| Spencer Jones NYY | CF | 6' 6" / 235 lbs | May 14, 2001 (22) | Vanderbilt |
| Druw Jones ARI | CF | 6' 4" / 180 lbs | Nov 28, 2003 (20) | None |
| Brock Jones TB | OF | 6' 0" / 197 lbs | Mar 28, 2001 (23) | Stanford |
| Kyle Jones MIN | RP | 6' 1" / 200 lbs | Feb 7, 2000 (24) | Toledo |
| Deundre Jones BOS | OF | 5' 11" / 190 lbs | Dec 12, 2003 (20) | None |
| Carson Jones SEA | OF | 6' 2" / 190 lbs | Sep 29, 2000 (23) | Virginia Tech |
| LJ Jones IV STL | 1B | 6' 0" / 225 lbs | Jun 27, 1999 (24) | Long Beach State |
| Levi Jordan CIN | SS | 5' 8" / 170 lbs | Sep 24, 1995 (28) | Washington |
| Blaze Jordan BOS | 3B | 6' 2" / 220 lbs | Dec 19, 2002 (21) | None |
| Rowdey Jordan NYM | LF | 5' 10" / 190 lbs | Jan 27, 1999 (25) | Mississippi State |
| William Kevin Jordan NYM | OF | 5' 10" / 190 lbs | Jan 27, 1999 (25) | Mississippi State |
| Brannon Jordan | P | 6' 2" / 190 lbs | Jul 20, 1998 (25) | South Carolina |
| Carlos Jorge CIN | SS | 5' 10" / 165 lbs | Sep 22, 2003 (20) | None |
| Dyan Jorge COL | SS | 6' 3" / 170 lbs | Mar 18, 2003 (21) | None |
| Marwys Jorge KC | RP | 6' 4" / 175 lbs | Feb 15, 2006 (18) | None |
| Tavian Josenberger BAL | OF | 6' 0" / 185 lbs | Oct 23, 2001 (22) | Arkansas |
| Caleb Joseph | C | 6' 3" / 180 lbs | Jun 18, 1986 (37) | Lipscomb |
| Tommy Joseph | 1B | 6' 1" / 255 lbs | Jul 16, 1991 (32) | None |
| Corban Joseph | 2B | 6' 0" / 185 lbs | Oct 28, 1988 (35) | None |
| Luis Joseph PIT | RP | 6' 4" / 176 lbs | Apr 22, 2003 (21) | None |
| Brayan Joseph CIN | SS | 5' 10" / 145 lbs | Sep 22, 2005 (18) | None |
| Jean Joseph TOR | CF | 5' 11" / 160 lbs | Feb 4, 2005 (19) | None |
| Jakey Josepha ARI | SS | 6' 2" / 135 lbs | May 15, 2004 (19) | None |
| Matt Joyce | RF | 6' 2" / 194 lbs | Aug 3, 1984 (39) | Florida Southern |
| Corey Joyce DET | 2B | 6' 0" / 190 lbs | Aug 19, 1998 (25) | North Carolina Central |
| Jimmy Joyce SEA | SP | 6' 2" / 210 lbs | Jan 13, 1999 (25) | Hofstra |
| Ben Joyce LAA | RP | 6' 5" / 225 lbs | Sep 17, 2000 (23) | Tennessee |
| Zach Joyce LAA | P | 6' 4" / 225 lbs | Sep 17, 2000 (23) | Tennessee |
| Chandler Jozwiak MIA | RP | 6' 0" / 185 lbs | Feb 15, 1999 (25) | Texas A&M |
| Torii Jr. | CF | - / 180 lbs | - | None |
| Jorge Juan ATL | SP | 6' 8" / 200 lbs | Mar 6, 1999 (25) | None |
| Simon Juan NYM | CF | 6' 2" / 195 lbs | Jul 13, 2005 (18) | None |
| Victor Juarez COL | RP | 6' 0" / 173 lbs | Jun 19, 2003 (20) | None |
| Daniel Juarez NYM | P | 5' 11" / 155 lbs | Sep 28, 2000 (23) | None |
| Aaron Judge NYY | RF | 6' 7" / 282 lbs | Apr 26, 1992 (31) | Fresno State |
| Nicholas Judice BOS | RP | 6' 8" / 230 lbs | Apr 28, 2001 (22) | Louisiana-Monroe |
| Grant Judkins OAK | SP | 6' 3" / 200 lbs | Aug 6, 1997 (26) | Iowa |
| Matt Juengel MIA | SS | 6' 2" / 185 lbs | Jan 13, 1990 (34) | Texas A&M |
| Hayden Juenger TOR | RP | 6' 0" / 180 lbs | Aug 9, 2000 (23) | Missouri State |
| Edouard Julien MIN | 2B | 6' 0" / 195 lbs | Apr 30, 1999 (24) | Auburn |
| Corey Julks HOU | LF | 5' 11" / 217 lbs | Feb 27, 1996 (28) | Houston |
| Josh Jung TEX | 3B | 6' 2" / 214 lbs | Feb 12, 1998 (26) | Texas Tech |
| Jace Jung DET | 2B | 6' 0" / 205 lbs | Oct 4, 2000 (23) | Texas Tech |
| Jakob Junis MIL | SP | 6' 3" / 238 lbs | Sep 16, 1992 (31) | None |
| Janson Junk MIL | SP | 6' 2" / 197 lbs | Jan 15, 1996 (28) | Seattle |
| Cameron Junker PIT | RP | 6' 5" / 220 lbs | Sep 3, 1997 (26) | Notre Dame |
| Ariel Jurado | RP | 6' 1" / 180 lbs | Jan 30, 1996 (28) | None |
| Evan Justice COL | RP | 6' 4" / 205 lbs | Jul 7, 1998 (25) | North Carolina State |
| Connor Justus | SS | 6' 0" / 190 lbs | Nov 2, 1994 (29) | Georgia Tech |
