Best Marketing Agencies in Boston (2026)

Introduction

Boston’s marketing agencies are weighted towards business-to-business work, especially for technology, healthcare and life sciences companies. The 12 firms below cover that B2B core alongside performance, affiliate and integrated agencies, and were chosen for recent work, 2025 and 2026 recognition, and the strength of their client rosters.

The region’s software, cybersecurity, hospital and biotech companies shape what local agencies sell. PAN Communications was named Outstanding Technology Agency of the Year at the 2025 PRWeek Awards, and Walker Sands, which runs a Boston office alongside its Chicago headquarters, was ranked sixth among US B2B marketing agencies by B2B Marketing in 2026. Most firms here now offer some form of AI search or answer engine optimisation, reflecting how much buyer research has moved into AI tools. On the consumer side, Acceleration Partners runs its global affiliate and partnership business from Boston, and Digitas keeps one of its largest offices in the city.

Every firm here has an active Boston office in 2026. The list is in no fixed order of merit. Idea-led creative shops are covered on our creative agencies page, and network advertising offices on the advertising agencies page.

The best marketing agencies in Boston

1. PAN Communications

Independent · Financial District · pancommunications.com

PAN is an integrated marketing and PR agency for B2B technology and healthcare brands, founded in 1995 and still led by founder and CEO Phil Nardone. Its Boston office is at 125 High Street, with further offices in New York, San Francisco, Chicago, Austin, Indianapolis and London. It won Outstanding Technology Agency of the Year at the 2025 PRWeek Awards, reporting 90% US organic growth in the year, and was PRovoke Media’s Data-Driven Agency of the Year in 2024.

The service mix now runs from PR and content to demand generation, creative, web and AI optimisation, and PAN says more than half of its client programmes are integrated across those areas. Clients include athenahealth, Seismic, Conga, Toshiba, Achievers and Jobber. PANBlast, a division built from the 2024 acquisition of BlastMedia, works with earlier-stage tech companies.

2. Overdrive Interactive

Financial District · ovrdrv.com

Overdrive Interactive is a Boston digital marketing agency headquartered at 60 State Street, led by CEO Rob Murray. Its work centres on paid media, SEO, social and analytics, and it has put answer engine optimisation (AEO) at the front of its offer, publishing a run of 2026 research on AI visibility and how to measure it.

Clients range from B2B technology to consumer services: Akamai, Dell Technologies, Siemens, Bright Horizons, PetSmart, Life Time Fitness and Muck Rack are among them. It suits marketing teams that want search, paid and AI visibility handled by one agency.

3. Walker Sands

Headquartered in Chicago · South End · walkersands.com

Walker Sands is a B2B marketing and PR agency founded in 2001, with headquarters in Chicago and a Boston office at 560 Harrison Avenue in the South End, as well as offices in Seattle and San Francisco. B2B Marketing ranked it sixth among US B2B marketing agencies in 2026, and it has appeared on the Inc. 5000 ten times.

Its services cover positioning, PR, content, demand generation and paid and organic search, with clients across technology, security, healthcare and commerce. Recent case studies include work for Sophos, Entrust, Sendbird, Aptos and Ensono, and Oak Street Health is also on the client roster.

4. Matter Communications

North End · matternow.com

Matter is a PR, marketing and creative agency founded in 2003, led by principal and CEO Scott Signore and president Mandy Mladenoff. It has more than 120 staff, with a Boston office on North Washington Street and further offices in Newburyport, Providence, Rochester, Dallas and Denver. It won three PR Club of New England Bell Ringer Awards in 2026.

The agency works across B2B technology, healthcare and consumer brands, combining media relations and analyst relations with paid media, SEO, marketing automation and generative engine optimisation. Segway’s product launch, which Matter ran, took a Diamond at the 2026 Pinnacle Awards. Salesloft, Modernizing Medicine, Roche Bros. and W.F. Young are among its clients.

5. Scratch Marketing + Media

Government Center · scratchmm.com

Scratch Marketing + Media is a B2B technology marketing agency at 55 Court Street. Its offer covers marketing strategy, account-based marketing, demand generation and paid media, tech PR and analyst relations, web experiences and AI search optimisation.

Sector focus includes AI and machine learning, cybersecurity, cloud and data centres, healthcare IT and biotech. Case studies feature 6sense, Comcast Business, Netrality, Genasys and Cayosoft. It is a sensible shortlist candidate for software and infrastructure companies that need PR, analyst relations and pipeline work from one team.

6. Allen & Gerritsen

Independent · Financial District · a-g.com

Allen & Gerritsen (A&G) is an independent integrated agency founded in 1985, with offices at 125 High Street in Boston and in Philadelphia. Andrew Graff is CEO. Its services bring together advertising, media and analytics, PR, design, customer experience and creator relations, and it publishes its own audience research, the Life Share Index.

Much of its work is for New England institutions. The New England Aquarium appointed A&G as creative and media agency of record in January 2025, and Meet Boston launched “The Drummer” with the agency in October 2025. Other clients include Massport (Boston Logan), Dunkin’, GIANT and the Museum of Science.

7. Digitas Boston

Publicis Groupe · Boston · digitas.com

Digitas is Publicis Groupe’s connected marketing agency, and its Boston office is one of the largest in the network, with more than 500 staff according to Campaign. A Boston role advertised in May 2026 asks staff to work from the office three to four days a week. Across the network, 2026 recognition includes Adweek 50 honours for chief solutions officer Melissa Berger and a Young Lions media win.

The agency combines data, media, social, commerce and creative for large consumer brands. Boston clients have included CVS Health, Dunkin’ and Polaris, and recent network work includes RaceTrac’s “One Trac Mind” and Sephora’s “Rush of Beauty”. It suits national brands that need scale and access to Publicis data and media.

8. Acceleration Partners

Boston · accelerationpartners.com

Acceleration Partners is a partnership marketing agency founded in 2007 by Robert Glazer, now led by CEO Matt Wool and president Sarah Johnson Dayes. Boston is one of its five hubs, alongside London, Berlin, Singapore and Sydney. It won 12 awards in 2025, including Best Affiliate Agency at the Performance Marketing Awards and at the US Partnership Awards, where it also won in 2024.

The agency runs affiliate, influencer and partnership programmes, with its own reporting platform, Prism. Clients include Target, Crocs, Allbirds, Reebok, Columbia, Instacart and Five Below. It reports more than $430 million in annual media spend for 2025, and suits brands building or scaling an affiliate channel.

9. Boathouse Group

Privately owned · Waltham · boathouseinc.com

Boathouse is a privately owned marketing agency founded in 2001 by John Connors, who remains CEO, and Chris Boland. Its team of around 75 works from one office on Charles Street in Waltham. It describes its work as growth architecture: insights, brand, media and activation, and AI and data. Search Engine Land named its team PPC Agency of the Year in 2024 for work with Corebridge Financial.

Healthcare and financial services are strong areas. Recent case studies include a brand transformation for Mass General Brigham Cancer Institute and the American Diabetes Association’s work on type 2 stigma, and clients include Eversource, Eastern Bank, MEFA, Franklin Templeton and The Boston Foundation. The agency also publishes research on how CEOs judge their CMOs.

10. Sagefrog Marketing Group

Headquartered in Doylestown, Pennsylvania · Back Bay · sagefrog.com

Sagefrog is a B2B marketing agency headquartered in Pennsylvania, which opened a Boston office at 361 Newbury Street in 2023 to serve New England clients. It focuses on healthcare and life sciences, software and technology, and industrial companies, and is a HubSpot partner. It publishes an annual B2B Marketing Mix Report.

Services cover branding, websites, content and inbound, and traditional marketing, sold as ongoing programmes or projects. Clients include Defibtech, Koneksa, Signant Health and IMA Clinical Research. It suits mid-sized life sciences and medical device companies that need a steady marketing programme more than a single campaign.

11. inSegment

Boston · insegment.com

inSegment is a digital marketing agency headquartered in Boston with around two decades in business and a network of US locations. Its services span generative engine optimisation, SEO, PPC, paid social, content and email, website development, creative and conversion rate optimisation. It lists 2026 Clutch awards among its recognition.

The client list has a strong local flavour: Boston University, MIT Sloan School of Management, Tufts Medicine, Rockland Trust, Avidia Bank and Harvard FCU, alongside technology companies such as Kaspersky, Sophos and Bombora. Higher education, financial institutions and B2B technology are its main sectors.

12. 829 Studios

Boston · 829studios.com

829 Studios is a Boston-based digital marketing agency covering performance marketing (paid search, paid social, programmatic and CTV, retail media), SEO and AI optimisation, PR, web and product design, and data engineering. It has built its own tools, Propel for websites and Apollo for performance reporting.

Clients include American Express, Securitas Technology, Cloudflare, Fidelity, REI, GitHub and Ramp. The mix of growth-stage technology companies and established brands makes it a good fit for teams that want media buying, analytics and site work in one place.

What to look for in a Boston marketing agency

Start with the sales motion. A software company selling to IT and security buyers needs an agency that understands long sales cycles, account-based programmes and analyst relations, which is the core of firms such as PAN, Walker Sands and Scratch. A consumer brand chasing online sales is better served by performance and partnership specialists such as 829 Studios or Acceleration Partners.

For healthcare and life sciences, check regulatory experience. Promotional claims, patient privacy and medical review all slow approvals, and tracking rules limit which channels and audiences an agency can use. Ask for examples in your category and how the agency handles review with your medical, legal and regulatory team.

Check who owns the data and the accounts. Ad accounts, analytics properties, CRM workflows and attribution models should sit in your name, with the agency given access. Many Boston firms now sell AI search or answer engine optimisation, so ask how they measure it and what they will report each month.

Finally, look at the day-to-day process. A typical month produces reports, ad variants, landing pages, press materials and call notes, often spread across email and several drives. Agencies with a clear review flow, and one place where clients can find the latest approved version, are easier to work with over a long relationship.

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Frequently asked questions

What is the best marketing agency in Boston?

It depends on the brief. For B2B technology, PAN Communications won PRWeek’s Outstanding Technology Agency of the Year in 2025 and Walker Sands ranked sixth among US B2B agencies in 2026. For affiliate and partnership marketing, Acceleration Partners won Best Affiliate Agency at several 2025 awards. For large consumer brands, Digitas runs one of its biggest offices in Boston.

Which Boston agencies specialise in B2B tech marketing?

PAN Communications, Walker Sands, Scratch Marketing + Media and Matter all build most of their business around technology companies, combining PR and analyst relations with demand generation and content. Overdrive Interactive and 829 Studios also work with software and infrastructure clients such as Akamai and Cloudflare, with more emphasis on paid media and search.

Which Boston marketing agencies work with healthcare and life sciences companies?

Sagefrog’s Back Bay office focuses on healthcare, life sciences and medical device clients. PAN works with healthcare brands such as athenahealth, Boathouse has worked with Mass General Brigham Cancer Institute and the American Diabetes Association, and Scratch lists biotech and healthcare IT among its sectors.

What is the difference between a marketing agency and an advertising agency?

Marketing agencies on this list cover the wider funnel: search, paid media, demand generation, affiliate programmes, PR and analytics, usually measured on pipeline or sales. Advertising agencies concentrate on campaign ideas and media for brand advertising. If you need a network office or a campaign-led shop, see our list of advertising agencies in Boston.

How much does a Boston marketing agency cost?

Fees vary widely by scope. Performance and affiliate agencies usually charge a monthly retainer, a percentage of media spend or a share of partner revenue, with the media budget billed separately. B2B and PR-led firms typically work on monthly retainers or project fees agreed after a scoping conversation.

Related lists

Marketing agencies in other cities: New York · San Francisco · Chicago · Seattle · London

More in Boston: Creative agencies · Advertising agencies · Branding agencies · Design agencies · Social media agencies · UX design agencies

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