The following is a list of rosters for each nation competing in men's baseball at the 2019 Pan American Games .
| Pos. | Position |
|---|---|
| P | Pitcher |
| C | Catcher |
| IF | Infielder |
| OF | Outfielder |
| Player | Pos. | DOB and age | Team | League | Birthplace |
|---|---|---|---|---|---|
| Agustín Borrino | P | September 30, 2000 (aged 18) | | Metropolitan Baseball League | Argentina |
| Rodrigo Bruera | P | April 25, 1980 (aged 39) | | Argentine Baseball League | Argentina |
| Ezequiel Cufré | P | February 4, 1990 (aged 29) | | Argentine Baseball League | Argentina |
| Miguel García | P | March 24, 1989 (aged 30) | | Argentine Baseball League | Córdoba, Argentina |
| Diego Echeverría | P | January 1, 1983 (aged 36) | | Argentine Baseball League | Dolores, Buenos Aires, Argentina |
| Guido Monis | P | March 10, 1979 (aged 40) | | Argentine Baseball League | Argentina |
| Lucas Ramón | P | May 8, 1996 (aged 23) | | Argentine Baseball League | Argentina |
| Federico Robles | P | November 5, 1993 (aged 25) | | Argentine Baseball League | Argentina |
| Agustín Tanco | P | December 17, 1993 (aged 25) | | Argentine Baseball League | Argentina |
| Federico Tanco | P | April 15, 1984 (aged 35) | | Argentine Baseball League | Argentina |
| Juan Pablo Angrisano | C | April 8, 1980 (aged 39) | | Metropolitan Baseball League | Argentina |
| Lucas Nakandakare | C | September 18, 1987 (aged 31) | | Metropolitan Baseball League | Vicente López, Buenos Aires, Argentina |
| José Gerez | C | August 28, 1995 (aged 23) | | Argentine Baseball League | Argentina |
| Jacinto Cipriota | IF | March 23, 1988 (aged 31) | | Metropolitan Baseball League | Buenos Aires, Argentina |
| Mauricio Costa | IF | May 9, 1984 (aged 35) | | Argentine Baseball League | Argentina |
| Federico Gómez | IF | July 19, 1991 (aged 28) | | Argentine Baseball League | Salta, Argentina |
| Nicolás Solari | IF | March 18, 1988 (aged 31) | | Metropolitan Baseball League | Argentina |
| Exequiel Talevi | IF | October 23, 1994 (aged 24) | | Argentine Baseball League | Argentina |
| Agustín Tissera | IF | November 16, 1993 (aged 25) | | Argentine Baseball League | Córdoba, Argentina |
| Nicolás Arrube | OF | July 21, 1987 (aged 32) | | Metropolitan Baseball League | Argentina |
| Sebastián García | OF | April 10, 1987 (aged 32) | | Metropolitan Baseball League | Argentina |
| Lucas Montalbetti | OF | January 27, 1983 (aged 36) | | Serie A2 | Salta, Argentina |
| Mauro Schiavoni | OF | August 6, 1986 (aged 32) | | Italian Baseball League | Salta, Argentina |
| Eduardo Zurbriggen | OF | March 4, 1988 (aged 31) | | Argentine Baseball League | Argentina |