Massachusetts
| Company | Category | Area | Address | Web | Contact person | |
| O MALLEY & PIZZUTI | Attorneys | Massachusetts | 874 MAIN ST, OSTERVILLE, Barnstable, Massachusetts, 02655-2013, USA | - | - | Martin J O'Malley |
| O S CREDIT UNION | Credit Unions | Massachusetts | 1 OCEAN SPRAY DR, LAKEVILLE, Plymouth, Massachusetts, 02347-1339, USA | - | - | - |
| O W LANDERGREN INC | Metal Spinning (Manufacturers) | Massachusetts | 1500 W HOUSATONIC ST, PITTSFIELD, Berkshire, Massachusetts, 01201-7500, USA | www.owlandergren.com | - | George Goodrich |