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Top Advertising Companies in California

52 of 134 advertising companies ranked on evidence in the Q4 2026 edition.

Between them, the 134 best-ranked of these 138 advertising companies cover advertising (37), creative (34), consumer products & services (28) and business services (25). They also list work in Los Angeles, San Diego, New York and York. 134 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

52 of 134 advertising companies ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

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  1. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
  2. California Cannabis Industry Association logo

    Medical · Legal · Partners

    The California Cannabis Industry Association, usually shortened to CCIA, represents businesses working inside the state's legal cannabis market.

    On record: Based in California, US

  3. California SEO Service logo

    California SEO Service presents itself as a digital marketing company serving businesses that want more traffic, leads and sales from the web.

    On record: Based in California, United States

  4. Captura Group logo

    Consumer Products & Services · Financial Services · Creative · Also in San Diego

    Captura Group is a San Diego marketing agency that puts Hispanic audiences and digital channels first.

    On record: Based in San Diego, California, USA

  5. CDM Digital Advertising Agency Worldwide logo

    Advertising · Creative · Also in Texas

    CDM Digital Advertising Agency Worldwide, also known as Creative Design Media, is a small marketing agency that began in Los Angeles and has a branch near Austin, Texas.

    On record: Based in Los Angeles, California

  6. Copy & Design logo

    Arts, Entertainment & Music · Real Estate · Non Profit · Also in Long Beach, California

    Copy & Design is a small virtual creative agency in Long Beach, California, pairing copywriters with designers.

    On record: Based in Long Beach, California, USA

  7. Counterflow Marketing logo

    Hospitality & Leisure · Advertising & Marketing · Business Services · Also in San Diego

    Counterflow Marketing, based in San Diego, California, offers full-service digital marketing as an agency.

    On record: Based in San Diego, California, United States

  8. CreatiVants logo

    Consumer Products & Services · Business Services · Non Profit

    CreatiVants is a technology and operations consultancy based in Monterey, California.

    On record: Based in Monterey, California

  9. Creative Linc Marketing logo

    Consumer Products & Services · Arts, Entertainment & Music · Real Estate

    Creative Linc Marketing, also known as CLM, is a full-service creative marketing agency in San Diego.

    On record: Based in San Diego, California, United States

  10. Creative Marketing Arts logo

    Creative · Property · Arts · Also in Wellington

    Creative Marketing Arts is a full-service marketing agency with offices in Folsom, Sacramento and Truckee, California.

    On record: Based in Folsom, Sacramento and Truckee, California, USA

  11. CRP Marketing logo

    Medical · Automotive · eCommerce

    CRP Marketing is a paid media agency in Chico, California. It plans and runs online advertising for businesses, with the stated aim of bringing in paying customers rather than…

    On record: Based in Chico, California, USA

  12. Cybba logo

    Hospitality & Leisure · Financial Services · Legal Cannabis

    Cybba plans, buys and measures advertising across the digital channels a brand might use, from awareness campaigns through to traffic and sales.

  13. Cyrusson Inc logo

    Hospitality & Leisure · Search Engine Optimization · Business Services · Also in San Francisco Bay Area

    Serving the San Francisco Bay Area, Cyrusson Inc. describes itself as a boutique digital marketing agency that handles websites, search, advertising and social media through one…

    On record: Address in California · Boutique

  14. Dancing Panda Marketing logo

    Arts, Entertainment & Music · Advertising & Marketing · Information Technology

    Working from San Diego, California, and serving clients across the United States, Dancing Panda Marketing focuses on WordPress and SEO.

    On record: Based in San Diego, California, USA

  15. Data Driven Group logo

    Advertising · Analytics · Also in Folsom, California

    Trading as Data Driven Marketing, this company plans and runs direct mail, print and email campaigns, with much of its published work aimed at car dealerships.

  16. Data Hunters logo

    In Glendale, California, Data Hunters works as a marketing agency that trades under the name Data Hunters Agency.

    On record: Based in Glendale, California, USA

  17. Design In Mind, LLC logo

    Design in Mind, LLC works from Silicon Valley, where strategy and visual work are planned together.

    On record: Based in Silicon Valley, California

  18. Design Trixx logo

    Creative · Responsive · Goals

    The web work runs in three modes that the agency names: theme building, customization of an existing theme, and custom coding.

    On record: Based in Pasadena, California, USA

  19. Digit Bazar logo

    Consumer Products & Services · Arts, Entertainment & Music · Advertising & Marketing · Also in Ahmedabad

    Digit Bazar is a branding consultancy that helps companies define how their brand is positioned and presented.

  20. Digital Lab Inc. logo

    Based in California, Digital Lab Inc designs websites and apps for clients across the United States.

    On record: Based in California, United States

  21. Digital Otters logo

    A California agency, Digital Otters is a US digital marketing firm that builds and runs growth systems for businesses at home and abroad.

    On record: Based in California, United States

  22. Digital Performance Marketing Group logo

    From Santa Barbara, California, Digital Performance Marketing Group works on brand design and paid advertising, mainly for dental and other health practices.

    On record: Based in Santa Barbara, California · Boutique

  23. Don't Panik logo

    Consumer Products & Services · Arts, Entertainment & Music · Advertising & Marketing

    Oceanside, California, in San Diego County, is where Don't Panik! works as a video marketing agency.

    On record: Based in Oceanside, California, United States

  24. Eileen Koch & Company, Inc (EKC PR) logo

    Social Media Management · Digital Marketing · Reputation Management

    Public relations, branding, digital marketing and consulting are offered under the name EKC PR, the trading name of Eileen Koch & Company, Inc.

    On record: Based in Los Angeles and Beverly Hills, California

  25. Element Five logo

    Business Services · Non Profit · Also in York and New York

    Element Five is a branding and marketing strategy agency in San Francisco.

    On record: Based in San Francisco, California

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