Mets Roster & Staff
Transactions
| Date | Transaction |
| 01/30/19 | New York Mets signed free agent OF Dyron Campos to a minor league contract. |
| 01/30/19 | New York Mets signed free agent RHP Jesus Rivas to a minor league contract. |
| 01/30/19 | New York Mets signed free agent RHP Melvin Arteaga to a minor league contract. |
| 01/30/19 | New York Mets signed free agent LHP Daniel Juarez to a minor league contract. |
| 01/29/19 | LF Barrett Barnes assigned to New York Mets. |
| 01/28/19 | New York Mets designated Gavin Cecchini for assignment. |
| 01/28/19 | New York Mets signed free agent LHP Justin Wilson. |
| 01/25/19 | C Dustin Houle assigned to New York Mets. |
| 01/22/19 | New York Mets signed free agent LHP Keelan Smithers to a minor league contract. |
| 01/17/19 | New York Mets invited non-roster RHP Ryder Ryan to spring training. |
| 01/17/19 | New York Mets invited non-roster C Colton Plaia to spring training. |
| 01/17/19 | New York Mets invited non-roster LHP David Peterson to spring training. |
| 01/17/19 | New York Mets invited non-roster LF Tim Tebow to spring training. |
| 01/17/19 | New York Mets invited non-roster RHP Joshua Torres to spring training. |
| 01/17/19 | New York Mets invited non-roster RHP Stephen Villines to spring training. |
| 01/17/19 | New York Mets invited non-roster C Patrick Mazeika to spring training. |
| 01/17/19 | New York Mets invited non-roster LHP P.J. Conlon to spring training. |
| 01/17/19 | New York Mets invited non-roster RHP Corey Taylor to spring training. |
| 01/17/19 | New York Mets invited non-roster C Ali Sanchez to spring training. |
| 01/17/19 | New York Mets invited non-roster 1B Pete Alonso to spring training. |
| 01/17/19 | New York Mets invited non-roster LHP Anthony Kay to spring training. |
| 01/17/19 | New York Mets invited non-roster SS Andres Gimenez to spring training. |
| 01/16/19 | New York Mets signed free agent 2B Jed Lowrie. |
| 01/11/19 | New York Mets signed free agent LHP Hector Santiago to a minor league contract and invited him to spring training. |
| 01/10/19 | New York Mets signed free agent LHP Luis Avilan to a minor league contract and invited him to spring training. |
| 01/07/19 | New York Mets released 3B David Wright. |
| 01/06/19 | Houston Astros traded LF J.D. Davis and SS Cody Bohanek to New York Mets for SS Luis Santana, OF Ross Adolph and C Scott Manea. |
| 01/06/19 | Houston Astros traded LF J.D. Davis and SS Cody Bohanek to New York Mets for SS Luis Santana, OF Ross Adolph and C Scott Manea. |
| 01/06/19 | New York Mets traded C Kevin Plawecki to Cleveland Indians for RHP Walker Lockett and 2B Sam Haggerty. |
| 01/06/19 | New York Mets traded C Kevin Plawecki to Cleveland Indians for RHP Walker Lockett and 2B Sam Haggerty. |
| 01/06/19 | New York Mets traded C Kevin Plawecki to Cleveland Indians for RHP Walker Lockett and 2B Sam Haggerty. |
| 01/06/19 | Houston Astros traded LF J.D. Davis and SS Cody Bohanek to New York Mets for SS Luis Santana, OF Ross Adolph and C Scott Manea. |
| 01/06/19 | Houston Astros traded LF J.D. Davis and SS Cody Bohanek to New York Mets for SS Luis Santana, OF Ross Adolph and C Scott Manea. |
| 01/06/19 | Houston Astros traded LF J.D. Davis and SS Cody Bohanek to New York Mets for SS Luis Santana, OF Ross Adolph and C Scott Manea. |
| 01/05/19 | Milwaukee Brewers traded CF Keon Broxton to New York Mets for RHP Adam Hill, RHP Bobby Wahl and 2B Felix Valerio. |
| 01/05/19 | Milwaukee Brewers traded CF Keon Broxton to New York Mets for RHP Adam Hill, RHP Bobby Wahl and 2B Felix Valerio. |
| 01/05/19 | Milwaukee Brewers traded CF Keon Broxton to New York Mets for RHP Adam Hill, RHP Bobby Wahl and 2B Felix Valerio. |
| 01/05/19 | Milwaukee Brewers traded CF Keon Broxton to New York Mets for RHP Adam Hill, RHP Bobby Wahl and 2B Felix Valerio. |
| 01/03/19 | New York Mets signed free agent OF Rymer Liriano to a minor league contract and invited him to spring training. |
| 01/03/19 | New York Mets signed free agent RHP Arquimedes Caminero to a minor league contract and invited him to spring training. |
| 01/03/19 | New York Mets signed free agent LF Jason Krizan to a minor league contract. |