Best Marketing Agencies in San Francisco (2026)

Introduction

San Francisco’s marketing agencies are shaped by their clients, and most of those clients sell technology. The 12 agencies below cover search and content, paid media and analytics, lifecycle marketing, mobile growth and B2B communications, chosen for recent work, 2025 and 2026 recognition, and the strength of their client lists.

Search has been the busiest area over the past year. Siege Media now describes itself as a GEO agency, built around visibility in AI answers as well as search results, and Victorious has added answer engine optimisation alongside its SEO work. Several large performance agencies serve Bay Area brands without a local office: Tinuiti, Wpromote and Power Digital all list offices elsewhere in 2026, so they are not included here. B2B communications remains a local strength, and Highwire, Mission North and Bospar all work mainly for technology companies.

Every agency here has an active office in San Francisco or Oakland in 2026. The list runs in no fixed order of merit, since the right choice depends on your stage, channel mix and how much strategy you want alongside execution.

The best marketing agencies in San Francisco

1. Siege Media

Founder-led · Union Square · siegemedia.com

Siege Media is a content and organic growth agency led by founder and CEO Ross Hudgens, with its main office on Post Street and further offices in Austin, Chicago and New York. It has repositioned around generative engine optimisation (GEO), combining SEO, content, digital PR and research reports aimed at both search engines and AI assistants.

Clients include Airbnb, Asana, Instacart, PayPal, Zendesk, Zillow and Zoom. Its published case studies report results in LLM citations as well as traffic, for example Instacart and Zapier, which is a useful sign of how it measures success.

2. Victorious

Privately held · San Francisco · victorious.com

Victorious is a San Francisco SEO agency covering technical SEO, content, migrations and, more recently, answer engine optimisation for AI search. It won Best SEO Campaign at the 2026 US Agency Awards and says it has served more than 600 brands.

Enterprise clients include SoFi, Salesforce, Wayfair, Bissell, Delta Dental and GE Digital.

3. Ars X Machina (AXM)

Independent, women-owned · San Francisco · weareaxm.com

AXM is an independent media and analytics agency founded in 2005 as Media Matters Worldwide. It is women-owned and WBENC certified, with its headquarters in San Francisco and client centres in Los Angeles, Dallas, New York and Seattle. It has twice been named Media Agency of the Year at the Ad Age Small Agency Awards and was on Ad Age’s Best Places to Work list for 2026.

Its offer covers media planning and buying, data science, audience development and measurement, including its own Agile Mix Modeling product. It suits brands that want media and measurement from one independent team.

4. Duncan Channon

Independent · San Francisco · duncanchannon.com

Duncan Channon is a 30-year-old independent agency with offices in San Francisco and Los Angeles, and a four-time Ad Age Small Agency of the Year. It runs strategy, creative, media and analytics in-house, along with experiential and influencer work, and reports more than $1 billion in media placed.

Clients include e.l.f. Cosmetics, Sephora, Rakuten, StubHub, Horizon Organic and the Golden State Warriors, plus long-running California public health programmes on tobacco control and opioid education.

5. Highwire

Privately held · Jackson Square · teamhighwire.com

Highwire is a marketing communications agency for B2B technology, cybersecurity, energy, financial services and health companies, based on Sansome Street with a second office in New York. It began as a PR firm and now groups its work into marketing, communications and corporate reputation, backed by strategy, creative and analytics teams.

Clients have included IBM, CrowdStrike and Zocdoc. PRovoke Media shortlisted it for Midsized Agency of the Year and included it among its best US agencies in 2025.

6. Mission North

Benefit corporation · Financial District · missionnorth.com

Mission North is an integrated communications agency for technology and science companies, organised as a California benefit corporation. Its practices span AI, health, financial services, energy and infrastructure, security and IPO communications.

The client list includes Google, LinkedIn, Zoom, Snowflake, Canva, GitLab, Brex and Commonwealth Fusion Systems. Recent work covers launches for robotics companies Apptronik and Standard Bots, and Snowflake’s IPO communications.

7. Bospar

Independent · San Francisco · bospar.com

Bospar calls itself the “Politely Pushy” PR agency and works mainly with tech, fintech, healthcare and AI companies. It is independent, with San Francisco among its five US offices alongside Los Angeles, New York, Chicago and Boston. PRovoke has described it as the number one US agency “pound for pound”.

Recent case studies feature Snowflake, Cisco, PayPal, Logitech and Mendix. It also runs Audit*E, a service that checks how AI platforms describe a client’s brand.

8. Tendo Communications

Privately held · SoMa · tendocom.com

Tendo is a B2B content and UX agency on Mission Street that works with large enterprise technology companies. Its services run from content strategy and creation through information architecture, website operations, SEO and demand generation.

Clients include Adobe, Cisco, Salesforce, Oracle, IBM, HP, VMware and Autodesk. It is a good fit for big corporate websites and content programmes where governance matters as much as output.

9. Scalero

Privately held · Oakland · scalero.io

Scalero is a lifecycle marketing studio headquartered on Broadway in Oakland, with offices in New York, Mexico City and Madrid. It handles email and SMS strategy, design and coding, along with data engineering such as CDP setup and identity resolution.

It is a certified partner of Customer.io (Gold) and Klaviyo (Master Platinum) and works with Braze and Iterable. Clients include Barstool Sports, Havaianas, Bokksu, beautiful.ai, Peerspace and Mighty Networks.

10. Moburst

Privately held · Financial District · moburst.com

Moburst is a mobile-first growth agency with a San Francisco office on California Street, one of eight worldwide alongside New York, London and Tel Aviv. Its units cover app store optimisation, SEO, media buying, influencer marketing, creative production and analytics.

Clients include Samsung, Google, Uber, Reddit and Calm. The agency reports three consecutive Adweek fastest-growing agency awards and a Mobile Marketing Association Digital Agency of the Year title.

11. Mekanism

Independent · San Francisco · mekanism.com

Mekanism was founded in San Francisco and now has offices in Seattle, New York, Los Angeles, Toronto, Montreal and Vancouver. It pairs creative work with full-funnel media through Mekanism Media, and runs an AI production studio. It was shortlisted in Campaign US’s 2026 Agency of the Year awards.

Clients include Amazon, Dropbox, Peloton, Lenovo, McDonald’s and Ben & Jerry’s. Recent awarded work includes Frida Mom’s “Stream of Lactation” and Alaska Airlines’ “Swell Deals”.

12. Monks

S4 Capital · San Francisco · monks.com

Monks (formerly Media.Monks) is the S4 Capital network chaired by Sir Martin Sorrell, with a San Francisco office among its sites in more than 30 countries. Its marketing offer covers media, data and analytics, content production and AI-led marketing operations through its monks.flow platform.

It suits larger brands that want media, data and content production from one partner. As with any network, check which parts of the team sit in San Francisco and which work from other offices.

What to look for in a San Francisco marketing agency

Start with your stage. A seed or Series A company usually needs a small team that can test channels quickly, while a public company needs governance, reporting and people who can work with procurement. Many San Francisco agencies say they serve both. Ask for case studies from companies at your size, in your sector.

Be clear on which part of the funnel you are buying. Some agencies here specialise in one channel, such as SEO, lifecycle or app growth. Others combine media, content and communications. Specialists usually go deeper on their own channel, while an integrated firm can make it easier to connect brand work with demand generation. Search is changing quickly, so ask any SEO or content agency how it measures visibility in AI answers as well as rankings.

Agree measurement before the work starts. Tech clients often want pipeline and revenue figures, while agencies report on traffic, leads or reach. Settle on the metrics, the attribution model and who owns the data and dashboards, especially if you may bring the work in-house later.

Look at how the agency handles the day-to-day: where briefs, drafts and reports live, how feedback is gathered, and how approvals are tracked. Content and campaign programmes produce a steady flow of files and review rounds. Agencies with one clear place for the latest work, and a simple approval process, save both sides time over a long engagement.

How Fabric helps marketing agency teams

Fabric gives a marketing agency one workspace for its files, client feedback and team knowledge, with AI search across all of it. The agency setup works around one space per client, with briefs, content, reports and call notes kept together. Teams running content programmes can follow the approach on the content marketing page.

Content pipelines suit Kanban boards, where any folder becomes a board and each card is the file itself, so drafts move from brief to review to published without a separate tracker. There is more on this in content planning. Search works by meaning across documents, PDFs, images and connected apps such as Google Drive, Notion and Gmail, which helps when an old campaign brief or report needs to be found quickly.

Client calls and interviews can be captured with AI meeting notes, which records without a bot, and uploaded recordings are transcribed and searchable with clickable timestamps. On Team plans, self-writing docs keep a page for each client up to date with decisions, deliverables and open items.

For reporting and delivery, any file or folder can be published as a web page and protected with a password. Link analytics shows when each named recipient opened a report or proposal and how long they spent on it. Clients can leave threaded comments through a shared link without signing up.

Password protection and link analytics are included on Pro and Team plans, and self-writing docs on Team plans. See plans for teams.

Frequently asked questions

What is the best marketing agency in San Francisco?

It depends on the channel and the stage of the company. On recent recognition, AXM has twice been Ad Age’s Small Agency Media Agency of the Year, Duncan Channon is a four-time Ad Age Small Agency of the Year, and Victorious won Best SEO Campaign at the 2026 US Agency Awards.

Which San Francisco agencies specialise in B2B tech marketing?

Highwire, Mission North, Bospar and Tendo Communications all focus on technology companies. Highwire and Mission North combine communications with marketing strategy, Bospar leads with PR, and Tendo concentrates on content and UX for large enterprise websites.

Which San Francisco agencies help with search in AI assistants?

Siege Media positions itself as a GEO agency and reports LLM citations in its case studies. Victorious offers answer engine optimisation alongside SEO, and Bospar runs Audit*E to check how AI platforms describe a brand.

Do Tinuiti, Wpromote and Power Digital have San Francisco offices?

Not in 2026. Tinuiti lists New York and Mexico City, Wpromote lists Los Angeles and New York, and Power Digital lists San Diego, New York, Atlanta and Medellín.

Should I hire a marketing agency or a social media agency?

A marketing agency usually covers several channels and ties them to pipeline or revenue. If most of your effort goes into organic social, creators and community, a specialist may suit you better; see the best social media agencies in San Francisco.

Related lists

Marketing agencies in other cities: New York · Los Angeles · London · Chicago · Austin

More in San Francisco: Creative agencies · Advertising agencies · Branding agencies · Social media agencies · UX design agencies · Content studios

Run your agency on Fabric: Fabric for agencies · Content marketing teams · Best client portal tools