Mets Roster & Staff
Transactions
| Date | Transaction |
| 04/30/12 | New York Mets activated CF Andres Torres from the 15-day disabled list. |
| 04/30/12 | New York Mets optioned 3B Zach Lutz to Buffalo Bisons. |
| 04/27/12 | New York Mets recalled Chris Schwinden from Buffalo Bisons. |
| 04/26/12 | New York Mets optioned Robert Carson to Binghamton Mets. |
| 04/24/12 | New York Mets placed LF Jason Bay on the 15-day disabled list. nondisplaced fracture of rib on left side |
| 04/24/12 | New York Mets recalled Zach Lutz from Buffalo Bisons. |
| 04/24/12 | New York Mets optioned Jeremy Hefner to Buffalo Bisons. |
| 04/24/12 | New York Mets signed free agent 2B Brad Emaus to a minor league contract. |
| 04/24/12 | New York Mets signed free agent OF Dustin Martin to a minor league contract. |
| 04/24/12 | New York Mets signed free agent LF Fred Lewis to a minor league contract. |
| 04/24/12 | New York Mets placed RHP Mike Pelfrey on the 15-day disabled list retroactive to April 22, 2012. Swelling in his right elbow. |
| 04/24/12 | New York Mets recalled Robert Carson from Binghamton Mets. |
| 04/23/12 | New York Mets recalled Jordany Valdespin from Buffalo Bisons. |
| 04/23/12 | New York Mets recalled Jeremy Hefner from Buffalo Bisons. |
| 04/23/12 | New York Mets placed SS Ronny Cedeno on the 15-day disabled list retroactive to April 21, 2012. Left intercostal strain. |
| 04/18/12 | New York Mets signed free agent RHP Jhonaiker Rodriguez to a minor league contract. |
| 04/14/12 | New York Mets signed free agent RHP Bladimil Vallejo to a minor league contract. |
| 04/14/12 | New York Mets signed free agent RHP Randinson Suazo to a minor league contract. |
| 04/06/12 | New York Mets recalled Kirk Nieuwenhuis from Buffalo Bisons. |
| 04/06/12 | New York Mets placed CF Andres Torres on the 15-day disabled list. Left calf strain. |
| 04/04/12 | New York Mets placed RHP D.J. Carrasco on the 15-day disabled list retroactive to March 26, 2012. right ankle sprain |
| 04/04/12 | New York Mets placed RHP Pedro Beato on the 15-day disabled list retroactive to March 26, 2012. right shoulder stiffness |
| 04/04/12 | New York Mets sent Armando Rodriguez outright to Binghamton Mets. |
| 04/04/12 | Milwaukee Brewers claimed RHP Josh Stinson off waivers from New York Mets. |
| 04/04/12 | New York Mets selected the contract of RHP Miguel Batista from Buffalo Bisons. |
| 04/04/12 | New York Mets selected the contract of LF Mike Baxter from Buffalo Bisons. |
| 04/04/12 | 2B Rylan Sandoval assigned to New York Mets. |
| 04/04/12 | RHP John Church assigned to New York Mets. |
| 04/04/12 | RHP Eric Beaulac assigned to New York Mets. |
| 04/04/12 | LHP Mark Cohoon assigned to New York Mets. |
| 04/04/12 | C Blake Forsythe assigned to New York Mets. |
| 04/04/12 | LHP Angel Cuan assigned to New York Mets. |
| 04/02/12 | 3B Richard Lucas assigned to New York Mets. |
| 04/02/12 | RHP Ryan Fraser assigned to New York Mets. |
| 04/02/12 | C Jean Luc Blaquiere assigned to New York Mets. |
| 04/02/12 | RHP Adrian Rosario assigned to New York Mets. |
| 04/02/12 | CF Rafael Fernandez assigned to New York Mets. |
| 04/01/12 | RHP Erik Turgeon assigned to New York Mets. |
| 04/01/12 | 2B Luis Nieves assigned to New York Mets. |
| 04/01/12 | New York Mets signed free agent 2B Bobby Scales to a minor league contract. |