Malden Trust Company
Mansfield Co-operative Bank
Marblehead Bank
Marlborough Co-operative Bank
Marlborough Savings Bank
Martha's Vineyard National Bank
Martha's Vineyard Savings Bank
Massachusetts Bank and Trust Company
Massachusetts Co-operative Bank
MassBank
Mayflower Co-operative Bank
Mechanics Bank
Mechanics' Co-operative Bank
Medford Co-operative Bank
Medford Savings Bank
Meetinghouse Bank
Mellon Trust of New England, National Association
Melrose Co-operative Bank
Mercantile Bank and Trust Company
Merchants Bank and Trust Company of Cape Cod