| # | Company | Employees |
|---|---|---|
| 1 |
Harte Hankshartehanks.com
A global customer experience company specializing in personalized marketing, customer care services, and fulfillment solutions to create enduring connections |
4,267 |
| 2 |
Digitas North Americadigitas.com
Creation of magnetic brand experiences using data, technology, creative, media, and strategy to deliver integrated marketing solutions globally. |
2,628 |
| 3 | 2,011 | |
| 4 |
Informa TechTargettechtarget.com
Leverages first-party data from technology websites to provide expert-led digital services, custom content, advertising, and demand generation for B2B tech buyers and sellers. |
1,518 |
| 5 |
Her Campus Mediahercampusmedia.com
A leading media portfolio catering to college students and Gen Z, offering diverse content through platforms like Her Campus and Spoon University |
1,427 |
| 6 |
Jack Morton Worldwidejackmorton.com
Global agency specializing in event marketing, integrated campaigns, sponsorship, and employee engagement through multi-channel experiential technology, trade show exhibits, and broadcast design services. |
1,414 |
| 7 |
Boston Globe Mediabostonglobemedia.com
Largest New England news organization providing trusted journalism, engaging content marketing, and targeted advertising to influential audiences. |
1,240 |
| 8 |
DemandSciencedemandscience.com
Provides global buyer intelligence and predictive insights to align sales and marketing with qualified audiences for B2B companies. |
967 |
| 9 |
AMPampagency.com
Full-service marketing agency combining creativity and commerce expertise to connect brand love with buying behavior and drive impactful conversions. |
881 |
| 10 |
JOHjohare.com
A regional brokerage firm on the East Coast focusing on profitable solutions for clients through passionate and integrity-driven sales strategies |
867 |
| 11 |
SapientNitrolinkedin.com
Global digital business transformation partner created in 2019 through a merger of legendary brands, now known as Publicis Sapient Join our community! |
788 |
| 12 |
MMBmmb580.com
Passionate, top-tier agency of inclusive thinkers and creators dedicated to inspiring positive change through their work for clients |
718 |
| 13 |
The Channel Companythechannelco.com
Providing communication, recruitment, enablement, engagement, demand generation, and intelligence services to support IT channel partnerships and ecosystem. |
620 |
| 14 | 530 | |
| 15 |
Carnegiecarnegiehighered.com
A leader in higher education marketing and enrollment strategy, offering services in research, digital marketing, lead generation, website development, and more |
509 |
| 16 |
Arnold Worldwidearn.com
An integrated advertising agency focused on using creativity to drive growth for a diverse portfolio of iconic brands and challengers |
422 |
| 17 |
Beyond Measure Productions, LLC.beyondmeasurefilms.com
A full-service production company specializing in brand storytelling through high-quality Webflix content and diverse partnerships with Boston organizations |
417 |
| 18 |
MarketOne Internationalmarketone.com
Global agency specializing in demand generation, lead nurturing, customer retention, and marketing investment optimization across complex buying cycles. |
398 |
| 19 |
Verndaleverndale.com
Digital experience agency providing strategy, design, development, and marketing for web, mobile, and ecommerce platforms to create human-centric customer journeys and business growth. |
386 |
| 20 |
Aquent Studiosaquentstudios.com
Global co/creation agency driving collaboration & partnerships through strategy, enablement, & activation to create breakthrough brand experiences |
377 |
| 21 |
Big Night Entertainment Groupbignight.com
Entertainment, hospitality, creative, marketing, and media company specializing in innovative experiences through restaurants, nightclubs, live music venues, and media ventures |
343 |
| 22 |
Intellitech Solutionsintellitechsoln.com
A leader in demand generation, providing hyper-targeted B2B lead generation solutions with high ROI for technology and media clients |
332 |
| 23 |
PANpancommunications.com
Integrated marketing and PR agency specializing in B2B technology and healthcare brands, transforming ideas into captivating stories for brand growth |
309 |
| 24 |
By Appointment Only, Inc. (BAO)baoinc.com
Leader in appointment setting for high-tech industry, providing customized and scalable support for sales and marketing teams to drive productivity and increase ROI Founded in 1997 |
308 |
| 25 |
C-4 Analyticsc-4analytics.com
A digital marketing agency that enhances clients' online presence, launches effective campaigns, drives sales, and boosts revenues consistently every month |
304 |
| 26 |
Acceleration Partnersaccelerationpartners.com
Global agency specializing in data-driven partnership marketing, managing diverse clients and creating high-performing, measurable brand-consumer connections worldwide. |
301 |
| 27 |
829 Studios829studios.com
The company provides innovative digital marketing solutions to help businesses grow by delivering tangible results and enhancing their online presence |
297 |
| 28 | 266 | |
| 29 |
demandDrivedemanddrive.com
An integrated sales and marketing agency offering full-service solutions to optimize processes, increase revenue growth, and develop holistic strategies |
234 |
| 30 |
Skywordskyword.com
This company specializes in creating customized content experiences for brands to enhance customer connections, build trust, and drive results |
202 |
| 31 |
Niftgonift.com
Nift revolutionizes customer acquisition by offering AI-matched 'thank you' gifts on partner platforms, driving loyal customers with trackable results and first-party data |
184 |
| 32 |
Printexprintex-inc.com
A Brand Management company established in 1994, specializing in promotional items, wearables, and print services with a focus on customer satisfaction and innovative solutions |
182 |
| 33 |
Brafton Inc.brafton.com
Content marketing agency providing platform, strategy, and creation services Offers SEO, social media, design, development, and content creation globally since 2008 |
171 |
| 34 |
Alleyoopalleyoop.io
This company specializes in maximizing ROI through lead generation, relationship management, and event support for companies seeking growth and scalability |
155 |
| 35 |
Allen & Gerritsena-g.com
A fiercely independent advertising agency founded in 1985, specializing in building brands' best selves through strategic messaging and audience engagement across touchpoints |
143 |
| 36 |
PIERpierinc.com
The company specializes in strategic and interactive marketing services, helping businesses reach their target audience effectively through digital platforms |
90 |
| 37 |
The Designers โ Brand & Graphic Designthedesignersonline.com
The Designers provide visual communication and graphic design services to help companies express their unique vision and personality, boosting recognition and bottom lines |
54 |
| 38 |
Acro Business Solutionsacrobusinesssolutions.com
A global business solutions provider focused on helping clients reach their target audience, improve marketing efficiency, drive revenue, and increase profitability |
48 |
| 39 |
Megawattmegawattcontent.com
Megawatt is a remote content agency specializing in creating top-notch B2B tech content for clients worldwide, focusing on marketing and sales funnel strategy |
36 |
| 40 |
Torro, LLCtorro.io
Digital agency specializing in web design, development, SEO, and social media advertising to simplify lives and boost business success |
29 |
| 41 | 29 | |
| 42 |
marlo marketingmarlomarketing.com
A full-service agency offering integrated brand strategy, PR, marketing, and creative services for consumer products and services from startups to Fortune 500 companies |
28 |
| 43 |
Norbellanorbella.com
Media strategy, planning, and buying firm specializing in healthcare, technology, and consumer brands Utilizes consumer behavior insights to deliver successful campaigns |
22 |
| 44 |
Boston Direct Incbostondirectinc.com
A leader in outsourced marketing and sales, specializing in acquiring residential consumers through personalized face-to-face interactions for billion dollar clients |
20 |
| 45 |
Webby Centralwebbycentral.com
A digital agency offering web design, mobile app development, branding, marketing, and business consultations for accelerated growth and exceptional outcomes |
13 |
| 46 |
Touchmark Promotions, Inc.touchmarkpromo.com
This agency helps clients create and distribute branded merchandise to enhance visibility in a competitive market, with a focus on creative marketing solutions |
2 |
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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
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- Healthcare providers in Massachusetts 213
- Hospitals and Health Care companies in Massachusetts 197
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- IT Services and IT Consulting companies in Massachusetts 177
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- Higher Education companies in Massachusetts 158
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- 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
- Marketing and communications agencies in the United States 1,807
- Marketing and communications agencies in New York State 449
- Marketing and communications agencies in California 288
- Marketing and communications agencies in Florida 111
- Marketing and communications agencies in Texas 98
- Marketing and communications agencies in Illinois 89
- Marketing and communications agencies in New Jersey 55
- Marketing and communications agencies in Georgia 45
- Marketing and communications agencies in Pennsylvania 41
- Marketing and communications agencies in Michigan 40
- Marketing and communications agencies in Ohio 38
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- Marketing and communications agencies in Missouri 26
- Marketing and communications agencies in New York 389
- Marketing and communications agencies in Los Angeles 65
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- Marketing and communications agencies in Boston 26
- Marketing and communications agencies in San Diego 26