GTU (Geek Town USA)
Pontiac, Michigan, USADigital marketing agency
Metro Detroit agency (Pontiac) focused on multi-location and franchise brands, offering an Ongoing SEO + GEO service together with local marketing, development and paid media.
SEO agencies
508 researched SEO agencies. Filter by location, service, industry, platform and published budget.
Listed A–Z. Order is not a ranking or quality score.
Hawaii Biz Marketing
Honolulu, Hawaii, USALocal SEO provider
Honolulu internet marketing service focused on local search visibility, Google Ads and lead follow-up for Oahu businesses, with its own Honolulu SEO and local SEO pages.
HB Freelance
London, UKIndependent consultant
Freelance ecommerce and technical SEO consultancy led by Hemanth Balaji in south-west London.
Helix SEO
Nashville, Tennessee, USASpecialist SEO agency
Nashville SEO company that runs monthly SEO programs and an attorney-focused SEO program, serving clients nationwide.
Hennessey Digital
North Hollywood, California, USASpecialist SEO agency
Law-firm marketing agency in the Los Angeles area offering SEO, GEO and PPC for personal injury, criminal defense and other practices.
Herdl
Ashby de la Zouch, UKDigital marketing agency
East Midlands marketing agency with offices in Ashby de la Zouch and Nottingham, running SEO campaigns in research, setup and ongoing phases with technical and link building work.
HexaGroup
Houston, Texas, USADigital marketing agency
Houston integrated marketing firm for energy and industrial companies, originally founded in France.
122.7% growth in positioned keywords and a 43.9% increase in organic traffic Houston SEO services results · agency-reported
HornTech
Auckland, New ZealandDigital marketing agency
Auckland digital marketing agency selling SEO, Google Ads, Shopify development and AI-built websites, plus GEO/AIO work.
133 ranking keywords and 44 referring domains How One Auckland Retail Store Went from Zero Online to 133 Ranking Keywords · agency-reported
Horton Group
Nashville, Tennessee, USADigital marketing agency
Nashville web design and digital marketing firm that sells SEO and AI search visibility work alongside websites, Google Ads and social media, delivered by an in-house team.
63% increase in web engagement and 100% of tracked keywords ranking in the top three search results for Harpeth Painting · agency-reported
Hozio
Holbrook, New York, USADigital marketing agency
Long Island digital marketing agency with a New York City office.
312% organic traffic Local HVAC client organic traffic growth · agency-reported
Human Level
Sant Joan d'Alacant, SpainSpecialist SEO agency
Long-established Spanish SEO/GEO consultancy near Alicante with a distributed team of around thirty consultants.
Hunters Digital
SingaporeDigital marketing agency
Singapore web design and digital marketing brand that runs a dedicated SEO programme covering technical audits, on-page work, content and backlinks, with e-commerce SEO, migration audits…
Hurrdat
Omaha, Nebraska, USADigital marketing agency
Omaha media, marketing and entertainment company that says it is best known for SEO, web design and media production.
Iconier
Las Vegas, Nevada, USADigital marketing agency
Las Vegas digital agency with separate SEO pages for technical, local, national, ecommerce and AI search work, plus web and app design.
Ignite Digital
Mississauga, Ontario, CanadaDigital marketing agency
Mississauga digital marketing agency with dedicated SEO service pages for local, enterprise, national, ecommerce and B2B SEO.
Ignite SEO
London, UKSpecialist SEO agency
London-based SEO-only agency founded by Adam Collins.
+200% organic traffic for Fleet Evolution · agency-reported
Ignite Visibility
San Diego, California, USADigital marketing agency
San Diego full-service digital marketing agency with a large SEO practice aimed at franchise, multi-location and ecommerce brands.
+130% indexed pages The Technical SEO Audit That Increased Indexed Pages by 130% · agency-reported
Ignition Search
Sheffield, UKDigital marketing agency
Sheffield performance-marketing agency offering SEO, paid ads, UX and content.
Imaginaire
Nottingham, UKE-commerce SEO agency
Nottingham ecommerce agency that narrowed its focus to Shopify builds plus ecommerce SEO and PPC.
20% revenue growth in 3 months for Alert Electrical · agency-reported
Impossible Marketing
SingaporeDigital marketing agency
Locally owned Singapore digital agency with dedicated SEO, local, enterprise and AI SEO (GEO/AEO) pages, an SEO consultancy and training offer, and published indicative monthly prices.