| WESTERN MASS. TITLE CO., INC. | — | 000136576 | 1978-05-08 | Inactive | SPRINGFIELD |
| WESTERN MASS. TRAILOR AND TRUCK REPAIR, INC. | — | 000191730 | 1983-03-21 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS (SPRINGFIELD) CHAPTER, NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION, INCORPORATED | — | 001489187 | 1952-06-03 | Active | SPRINGFIELD |
| WESTERN MASSACHUSETTS ADMINISTRATIVE SERVICES, INC. | — | 042614889 | 1977-03-28 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS APPRAISERS, INC. | — | 000240347 | 1986-06-24 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS BARBER SCHOOL INC. | — | 000944819 | 2007-02-16 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS BLACK NURSES' ASSOCIATION INC. | — | 001576395 | 2022-04-14 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS BRIDGE ASSOCIATION, INC. | — | 237110096 | 1971-04-15 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS BUICK DEALERS ADVERTISING ASS.,INC. | — | 042657122 | 1976-10-04 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS BUICK GMC MARKETING ASSOCIATION, INC. | — | 001258956 | 2017-02-01 | Active | SPRINGFIELD |
| WESTERN MASSACHUSETTS CATHOLIC FOUNDATION, INC. | — | 000613742 | 1998-04-16 | Active | SPRINGFIELD |
| WESTERN MASSACHUSETTS CHAP.,AMERICAN INSTITUTE OF ARCHITECTS | — | 000114833 | 1960-08-31 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS CHAPTER OF THE AMERICAN SOCIETY OF CLU & CHFC, INC. | — | 046135040 | 1965-02-02 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS CLAIMSMEN'S ASSOCIATION, INC. | — | 000001286 | 1965-10-26 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS COALITION FOR OCCUPATIONAL SAFETY AND- | — | 043109068 | 1991-06-05 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS COMMUNITY LOAN FUND, INC. | — | 042904265 | 1985-06-03 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS COUNCIL FOR GAMING ACCOUNTABILITY INC | — | 463214887 | 2013-07-18 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS DIVORCE AND FAMILY LAW CLINIC, P.C. | — | 000434456 | 1993-06-30 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS ECONOMIC EDUCATIONAL COUNCIL, INC. | — | 000001680 | 1964-12-23 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS ELECTRIC COMPANY | — | 041961130 | 1900-01-01 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS HISPANIC ASSOCIATION, INC. | — | 000001324 | 1975-05-30 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS HOME BUILDERS INFORMATION AND REFERRA* | — | 000744543 | 2001-03-07 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS JUVENILE DEFENSE BAR ASSOCIATION INC. | — | 000802603 | 2001-10-15 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS LACROSSE, INC. | — | 000707103 | 2000-05-23 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS LEGAL SERVICES,INC. | — | 042506744 | 1972-09-05 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS LIFECARE CORPORATION | — | 043067900 | 1989-07-24 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS MORTGAGE COMPANY, INC. | — | 043518498 | 2000-05-24 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS MORTGAGE EXPERTS, LLC | — | 000890388 | 2005-03-09 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS MUSIC GUILD, INC. | — | 000001174 | 1956-05-04 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS ORDER OF BLACK LAW ENFORCEMENT OFFICE | — | 000111631 | 1984-09-05 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS ORGANIZATION OF DISABLED WORKERS,INC. | — | 000106188 | 1982-04-20 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS PARALEGAL ASSOCIATION, INC. | — | 043051740 | 1990-03-30 | Active | SPRINGFIELD |
| WESTERN MASSACHUSETTS PHOBIA SOCIETY, INC. | — | 001002816 | 1987-10-05 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS PISTOL LEAGUE LLC | — | 001457996 | 2020-09-08 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS PRIMARY CARE, PC | — | 001118206 | 2013-10-09 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS SMALL BUSINESS ASSISTANCE, INC. | — | 237162945 | 1970-12-15 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS SOBER LIVING ALLIANCE, INC. | — | 001000081 | 2009-04-22 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS SUBSTANCE ABUSE PROVIDERS ASSOCIATION, INC. | — | 222512733 | 1980-01-04 | Active | SPRINGFIELD |
| WESTERN MASSACHUSETTS THEATRE EDUCATION INSTITUTE, INC. | — | 000812249 | 2002-03-06 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS VENTURE FORUM, INC. | — | 000813580 | 2002-03-25 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS VETERANS OF COLOR, INC. | — | 043323224 | 1996-07-22 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS VETERANS' RESOURCE DEVELOPMENT CORPOR* | — | 000456175 | 1994-02-18 | Inactive | SPRINGFIELD |
| WESTERN MASSACHUSETTS WOMEN IN CRIMINAL JUSTICE, INC. | — | 000014396 | 1975-06-27 | Inactive | SPRINGFIELD |
| WESTERN MEDICAL SUPPLY, INC. | — | 000872045 | 2004-07-15 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND CAT FANCIERS, INC. | — | 000057470 | 1977-03-23 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND COALITION FOR OCCUPATIONAL SAFETY AND HEALTH, INC. | — | 001291058 | 2017-09-16 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND COLLEGE LEGAL CLINICS,INC. | — | 000997039 | 1978-12-28 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND DEVELOPMENT CORPORATION | — | 042909296 | 1985-04-24 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND ENTERPRISE FORUM, INC. | — | 000110755 | 1984-04-20 | Inactive | SPRINGFIELD |
| WESTERN NEW ENGLAND INDEPENDENT PRACTICE ASSOCIATION, INC. | — | 043242410 | 1994-05-27 | Inactive | SPRINGFIELD |