| # | Company | Employees |
|---|---|---|
| 1 |
Goodwingoodwinlaw.com
Global law firm providing litigation, regulatory compliance, advisory services, and complex transactions for clients in diverse industries worldwide. |
3,975 |
| 2 |
Nixon Peabody LLPnixonpeabody.com
A top-100 law firm with 15 offices globally, specializing in exceptional client service, collaboration, diversity, and community engagement |
1,900 |
| 3 | 1,542 | |
| 4 |
Fish & Richardson P.C.fr.com
Specializes in intellectual property law with extensive experience in patent litigation, prosecution, and post-grant proceedings across multiple venues. |
1,520 |
| 5 |
Committee for Public Counsel Servicespubliccounsel.net
This organization in Massachusetts provides legal representation to indigent individuals in criminal, civil, and administrative cases through staff attorneys and private counsel |
851 |
| 6 |
Foley Hoag LLPfoleyhoag.com
An international law firm with offices in major cities, focusing on innovative industries and high-stakes litigation, delivering exceptional service to clients |
790 |
| 7 |
MG+M The Law Firmmgmlaw.com
A national litigation firm with expertise in various practice areas, offering unified team approach for optimal results and value across the country |
582 |
| 8 |
Choate, Hall & Stewart LLPchoate.com
A premier law firm in Boston with a single-office model, providing top legal services to clients nationally and internationally in key practice areas |
576 |
| 9 |
Goulston & Storrsgoulstonstorrs.com
A modern and vibrant law firm that values collaboration, deep expertise, diligence, and mutual respect to provide optimal solutions for clients |
502 |
| 10 |
Wolf Greenfieldwolfgreenfield.com
Leading IP law firm with over a century of experience protecting clients' intellectual property, offering a full range of services across industries |
473 |
| 11 | 414 | |
| 12 |
Hinckley Allenhinckleyallen.com
A full-service law firm providing legal services and business advice in practices such as Construction, Corporate, Litigation, Real Estate, and Trusts & Estates |
408 |
| 13 |
Nutternutter.com
A top-tier law firm founded in 1879, offering expert legal services in corporate, finance, IP, litigation, real estate, and more |
405 |
| 14 |
Phillips Lytle LLPphillipslytle.com
A preeminent law firm providing high-level client service, expertise in various practice areas, and serving multinational clients, Fortune companies, startups, and individuals |
396 |
| 15 |
Morrison Mahoney LLPmorrisonmahoney.com
A leading litigation firm in the Northeast with 180+ attorneys, offering a wide range of legal services to corporate clients |
385 |
| 16 |
Sullivan & Worcester LLPsullivanlaw.com
Innovative international law firm supporting visionary clients in various industries with strategic guidance for success and rewriting the rules |
363 |
| 17 |
Verrillverrill-law.com
A respected and experienced legal team offering a wide range of services, specializing in various practice areas and industries with a commitment to quality and service |
338 |
| 18 |
Drummond Advisorsdrummondadvisors.com
International consulting services specializing in accounting, tax, legal, and business development for Brazilian and US companies with a multidisciplinary team |
315 |
| 19 |
Greater Boston Legal Servicesgbls.org
A nonprofit organization in Boston provides free legal assistance to low-income individuals and families to help them access basic necessities |
278 |
| 20 |
Army & Roche, LLC
The company, which is now closed, provided services or products before shutting down |
187 |
| 21 |
Keches Law Groupkecheslaw.com
This firm specializes in personal injury, workers' compensation, social security, medical malpractice, and employment law cases on a contingent fee basis |
186 |
| 22 |
Conservation Law Foundationclf.org
Pragmatically tackling New England's environmental issues with law, science, and innovation to create a thriving region for all |
182 |
| 23 |
DaMore Title and Closing, A Kriss Law LLC Companydamore-law.com
A leading law practice in MA & VT specializing in Business, Real Estate, Family, Estate Planning, and Personal Injury law services |
27 |
| 24 |
Seegel Lipshutz Lo & Martin, LLP, Attorneys At Lawsllm-law.com
A team of experienced attorneys providing legal services in estate planning, elder law, business law, real estate law, and general litigation Offering practical solutions |
22 |
| 25 |
Berluti McLaughlin & Kutchin LLPbmklegal.com
A full-service law firm providing best-in-class legal services in civil advocacy, corporate transactions, finance, estate planning, and personalized client relationships |
21 |
| 26 |
Pierce & Mandell, P.C.piercemandell.com
This company offers legal services to companies, professional practices, non-profit organizations, and individuals, ensuring personalized attention and cost-efficient representation |
19 |
| 27 |
Coogan Smith, LLPcoogansmith.com
A highly regarded law firm in Massachusetts and Rhode Island, specializing in business law, litigation, personal injury, estate planning, real estate, and family law |
19 |
| 28 |
Elmore Patent Law Groupelmorepatents.com
A team of skilled patent professionals providing high-quality intellectual property services to startups, universities, and Fortune 100 companies |
15 |
| 29 |
Triffletti & Costa, P.C.plymouthlaw.com
A law firm specializing in personal injury, real estate, civil litigation, family law, and estate matters, with a focus on client communication and accessibility |
15 |
| 30 |
Harrington Heep LLPharringtonheep.com
A legal firm offering expertise in building and implementing local programs, providing comprehensive representation to public and private-sector clients with personalized service and competitive rates |
14 |
| 31 |
MCGRATH & KANE ATTORNEYS AT LAW, INC.mcgrathkanelaw.com
A law practice company located in Boston, Massachusetts, specializing in providing legal services to clients in various legal matters |
13 |
| 32 |
Valerio Dominello & Hillman, LLCvdhboston.com
A team of experienced attorneys offering expert legal counsel in employment, labor, and school law, along with litigation and appellate services |
13 |
| 33 |
Campoli, Monteleone & Mozian, P.C.campolilaw.com
The company offers comprehensive legal services to individuals, banks, businesses, insurance companies, and governmental entities, with a focus on quality representation and personalized attention |
12 |
| 34 |
Diller Law, LLPdillerlaw.com
A firm of experienced personal injury lawyers providing high-quality care for all types of personal injuries, fighting hard to recover fair compensation for clients |
12 |
| 35 |
Scafidi Juliano, LLPscafidilaw.com
Boutique law firm in Massachusetts specializing in real estate law, business/corporate law, condominium law, estate planning, zoning, permitting, and civil litigation |
6 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 2, 2026.
More company lists in Massachusetts
- The largest companies in Massachusetts 3,427
- SaaS companies in Massachusetts 342
- Education providers in Massachusetts 313
- Software Development companies in Massachusetts 275
- Manufacturers in Massachusetts 269
- AI companies in Massachusetts 246
- Financial services firms in Massachusetts 235
- Healthcare providers in Massachusetts 213
- Hospitals and Health Care companies in Massachusetts 197
- Hardware manufacturers in Massachusetts 196
- IT Services and IT Consulting companies in Massachusetts 177
- Retail chains in Massachusetts 169
- Critical infrastructure operators in Massachusetts 165
- Higher Education companies in Massachusetts 158
- Venture capital and private equity firms in Massachusetts 157
- IT services companies in Massachusetts 155
- Consulting firms in Massachusetts 153
- Financial Services companies in Massachusetts 153
- Pharmaceutical companies in Massachusetts 143
- Publicly traded companies in Massachusetts 125
- Venture Capital and Private Equity Principals companies in Massachusetts 122
- Biotechnology Research companies in Massachusetts 110
- Data and analytics companies in Massachusetts 107
- Public sector organisations in Massachusetts 99
The same list elsewhere in United States
- Law firms in the United States 1,066
- Law firms in New York State 190
- Law firms in California 116
- Law firms in Texas 68
- Law firms in Florida 66
- Law firms in Illinois 54
- Law firms in Pennsylvania 40
- Law firms in Minnesota 32
- Law firms in Ohio 30
- Law firms in Georgia 26
- Law firms in New Jersey 26
- Law firms in New York 129
- Law firms in Washington 41
- Law firms in Chicago 40
- Law firms in Los Angeles 31