Top 100 Advertising Agencies in California
The Best of December 2025Looking for a top advertising agency in California?
Businesses looking to develop a relationship with media outlets should consider working with an advertising agency. Beyond increasing visibility, top agencies are a gateway to a variety of crucial resources, including researchers, designers, SEO/PPC experts, and social media managers.
To assist you in your search for a partner, we’ve compiled this list of the top advertising and marketing companies in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Ad and Marketing Companies
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1$1,000+50 - 249 employeesCosta Mesa, CARead More
Based in Costa Mesa, California; Raleigh, North Carolina and Austin, Texas, KlientBoost is a pay per click agency. Launched in 2015, the midsize team offers Pay Per Click, Advertising, Social Media Marketing, Conversion Optimization, and more.
Clients
BloombergIndustries
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2$1,000+10 - 49 employeesSan Francisco, CARead More
Jives Media is a SEO company. The small San Francisco, California-based agency was launched in 2012. Their team specializes in Search Engine Optimization, Pay Per Click, Advertising, Branding, and more.
Clients
OracleIndustries
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3$5,000+250 - 999 employeesSan Diego, CARead More
Founded in 2012, Power Digital is a social media marketing agency. They are based in San Diego, California; New York, New York and Arlington, Virginia and have a midsize team. Their services include Social Media Marketing, Search Engine Optimization, Pay Per Click, Advertising, and more.
Clients
TOMSIndustries
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4$75,000+10 - 49 employeesSan Diego, CARead More
Founded in 2005, Traina is a premier branding agency based in San Diego that is reimagining the way brands are built. By unifying strategy, design, and digital expertise under one roof, their team creates market-leading brands that are driven by data, fueled by design, and built for digital from day one.
Clients
MicrosoftIndustries
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5$50,000+2 - 9 employeesSausalito, CALaunched in 2010, Division of Labor is an Advertising company. Their small team is in Sausalito, California and Larkspur, California. Their team specializes in Advertising, Digital Strategy, Branding, Media Planning & Buying, and more.Read More
Clients
San Jose SharksIndustries
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6$5,000+10 - 49 employeesSan Francisco, CARead More
Gumas is a full-service marketing agency based in San Francisco. The agency, founded in 1984, is a team of less than 20 who provide, among others, marketing strategy, advertising, and graphic design services to a variety of companies.
Clients
Lira ClinicalIndustries
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7$1,000+10 - 49 employeesRolling Hills Estates, CABranding firm The Bureau Of Small Projects was founded in 2013. Their small team is headquartered in Rolling Hills Estates, California and Brooklyn, New York. The Bureau Of Small Projects specializes in Branding, Advertising, Web Design, Marketing Strategy, and more.Read More
Clients
The Planetary Society With Bill Nye U.S. Fish and Wildlife Stanford UniveristyIndustries
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8$25,000+10 - 49 employeesSan Diego, CABig Day the Agency is an Advertising company established in 2021. They are in San Diego, California and have a small team. Their services include Advertising, Branding, Social Media Marketing, Email Marketing, and more.Read More
Clients
Royal Caribbean InternationalIndustries
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9$5,000+10 - 49 employeesSan Diego, CARead More
TAVO Media Group is a small advertising company. Headquartered in San Diego, California, the firm was founded in 2012. Their services include advertising, marketing strategy, branding, search engine optimization, and more.
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10$25,000+10 - 49 employeesLos Angeles, CAAntonio & Paris is a branding agency based in Los Angeles, California and Ciudad de México, Mexico. The small agency was established in 2003. Their services include Branding, Advertising, Market Research, and Marketing Strategy.Read More
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11$50,000+10 - 49 employeesMill Valley, CAE29 Marketing is a Marketing Strategy company launched in 2017. They are located in Mill Valley, California and Mill Valley, California and have a small team. Their services include Marketing Strategy, Advertising, Digital Strategy, Social Media Marketing, and more.Read More
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12$25,000+2 - 9 employeesSan Francisco, CARead More
Theory SF is a San Francisco-based creative agency. The agency was founded in 2015 and has a team of 10 that provides a variety of services including branding, marketing strategy, web design, advertising, digital strategy, and more.
Clients
NetGearIndustries
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13$100,000+10 - 49 employeesSan Francisco, CARead More
Based in San Francisco, Cutwater is a full-service advertising agency whose name derives from their vision – they help clients find their cutwater, or the clearest manifestation of their company's vision. Founded in 2007, its team of nearly 50 specializes in advertising, SEO, and social media marketing services among other marketing efforts.
Clients
HartzIndustries
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14$1,000+50 - 249 employeesLos Angeles, CARead More
Trivium Group - Amazon Agency is a Marketing Strategy company. Headquartered in Los Angeles, California, their midsize team specializes in Marketing Strategy, Pay Per Click, and Advertising. The company was founded in 2021.
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15$5,000+50 - 249 employeesLos Angeles, CARead More
SeedX Inc., an Ecommerce Marketing company, was launched in 2015. They are based in Los Angeles, California; Austin, Texas and New York, New York and have a midsize team. Their services include Ecommerce Marketing, Advertising, Search Engine Optimization, Web Design, and more.
Clients
American Marketing Association 1-800-FlowersIndustries
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16$10,000+10 - 49 employeesCarlsbad, CARead More
Digital Ink is a small advertising company launched in 2014. Their services include advertising, branding, marketing strategy, digital strategy, and more. The company is in Carlsbad, California; Toronto, Canada and Docklands, Australia.
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17$25,000+10 - 49 employeesSan Diego, CARead More
BLVR is a new type of agency, not just a creative shop but a belief company. They consult with fearless leaders to build brands that shape culture through brand strategy, identity, campaigns, and experiences.
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AndisIndustries
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18$25,000+10 - 49 employeesSan Francisco, CARead More
Most Likely To is an advertising agency from San Francisco. It was founded in 2017 and now has a team of 6 that works on advertising, branding, digital strategy, media planning & buying, content marketing, and video production for companies of varying sizes.
Clients
Click TherapeuticsIndustries
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19$5,000+10 - 49 employeesSanta Rosa, CARead More
The Engine is Red is a full-service digital agency with locations in Santa Rosa, Calif., and Minneapolis. The agency was founded in 2008 and has around 20 employees who specialize in marketing strategy, branding, web design and development, and mobile app development, among other services. It serves clients in the health care, nonprofit, retail, education, energy, and financial industries.
Clients
Rombauer VineyardsIndustries
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20$50,000+10 - 49 employeesSan Francisco, CARead More
CSTMR is a SEO company. Their small team is headquartered in Bee Cave, Texas and San Francisco, California. The agency provides Search Engine Optimization, Pay Per Click, Web Design, Advertising, and more. The agency was founded in 2014.
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CreditKarmaIndustries
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21$5,000+10 - 49 employeesCosta Mesa, CARead More
AdQuadrant, a social media marketing company, was launched in 2013. Based in Costa Mesa, California, their small team offers social media marketing, conversion optimization, digital strategy, email marketing, and more.
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22$10,000+50 - 249 employeesCarlsbad, CARead More
Storm Brain is a web design agency. Headquartered in Carlsbad, California; Costa Mesa, California; Santa Monica, California and New York, New York, their midsize team provides Web Design, Web Development, Search Engine Optimization, Pay Per Click, and more. The firm was founded in 2007.
Clients
Nike Chase (JPMorgan Chase & Co.) Citi (Citigroup) TargetIndustries
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23$5,000+10 - 49 employeesIrvine, CARead More
Digital marketing agency Window To Recovery is headquartered in Costa Mesa, Calif. Since 2017, their small team of 2 has been specializing in digital strategy, SEO, web design, advertising, and more.
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Spencer Recovery CentersIndustries
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24Undisclosed50 - 249 employeesSan Francisco, CAArs X Machina (formerly Media Matters Worldwide), a media planning & buying company, was launched in 2005. The firm offers Media Planning & Buying, Advertising, Digital Strategy, Social Media Marketing, and more and has a midsize team.Read More
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SAPIndustries
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25$25,000+50 - 249 employeesPalo Alto, CAXpedition Media is a midsize Event Management company. Founded in 2016, the company is in Los Angeles, California; San Fransisco, California; New York, New York and Palo Alto, California. Their team focuses on Event Management, Social Media Marketing, Video Production, Advertising, and more.Read More
Clients
Google, Airbnb, YouTube, Amazon, Matilleon,Industries
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26$5,000+10 - 49 employeesRedondo Beach, CAFifty & Five, a social media marketing company, is located in Orlando, Florida; Redondo Beach, California and Rochester, Michigan. The agency focuses on Social Media Marketing, Advertising, Public Relations, Marketing Strategy, and more and has a small team.The agency was established in 2009.Read More
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NBC/UniversalIndustries
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27$25,000+10 - 49 employeesOakland, CARead More
Emotive Brand specializes in B2B strategy, working with high growth tech companies and professional services firms to deliver marketing and brand strategy, brand messaging, visual identity, and logo design.Founded in 2009 and based in Oakland, CA, Emotive Brand has a team of 15+ employees. A few of their specialized services include aligning leadership teams, designing brand experiences, and enabling sales teams with the tools they need.
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SlackIndustries
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28$1,000+10 - 49 employeesLos Angeles, CALawRank is a small SEO agency. Launched in 2014, the firm is in Los Angeles, California and New York, New York. Their services include Search Engine Optimization, Advertising, Pay Per Click, and Web Design.Read More
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Lorenz & LorenzIndustries
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29Undisclosed50 - 249 employeesSan Francisco, CARead More
Duncan Channon is an advertising and media company with creative expertise in branding, design, print, video, and digital marketing. They also provide business strategy and media planning and buying. Founded in 1990, the San Francisco-based team is made up of nearly 100 employees.
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UpworkIndustries
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30$50,000+10 - 49 employeesEl Segundo, CALondon : Los Angeles is an Advertising company. Founded in 2017, the firm is in El Segundo, California and London, England. The small team specializes in Advertising, Branding, Video Production, Broadcast Video, and more.Read More
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Total Wine & MoreIndustries
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