Top 13 International SEO Companies in 2026

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To help you narrow that choice, we’ve assembled a shortlist of international SEO firms worth considering in 2026. This list focuses on proven teams with global experience and gives you a clear starting point to evaluate which partner aligns with your business priorities.

After scoring every agency against the criteria above, the shortlist built itself. These are the international SEO companies that consistently ranked highest across all metrics, and this is who made the final list:

1. SeoProfy

SeoProfy is the best global SEO agency headquartered in Orlando, Florida. With 13+ years of experience and a team of 100+ specialists, our agency delivers data-driven strategies that have earned multiple industry awards. SeoProfy works across SaaS, ecommerce, travel, finance, legal, healthcare, real estate, and iGaming, and is trusted by international brands such as Preply, AutoDoc, and VistaCreate.

One of the reasons so many businesses opt for our international SEO services is a clear focus on client success and ROI. We start every collaboration with a deep audit to uncover gaps and opportunities, then execute through dedicated account managers, in-house SEO specialists, and link builders, a multilingual content team working across 15+ languages, and proprietary tools like LinkChecker.PRO and SearchAnalytics.ai, and regular, transparent reporting on results.

The scope covers technical fixes such as site structure, hreflang tags, duplicate content management, and domain or subdomain structures, along with content localization (not translation) that adapts pages and messaging to local search behavior in every market. It also includes full global organic growth support, from international link building and specific keyword research to competitor analysis and ongoing audits.

No matter if you’ve already started expanding into new markets or are just beginning your journey, our data-driven SEO company has the experience, the tools, and proven results to help you maximize the impact of both local and international SEO, backed by a 5.0/5 Clutch rating across 88+ client reviews.

• Services: International SEO, Enterprise SEO, Technical SEO, Link Building, On-page SEO, SEO Audits, Content Writing, Local SEO, Keyword Research, Generative Search Optimization (GEO), Ecommerce SEO, Site Migrations.
• Case results: 209% increase in traffic for a global software brand, 50% growth in website traffic for an educational business.

2. WebFX

WebFX is a U.S.-based digital marketing agency founded over 28 years ago. The firm is headquartered in Harrisburg, Pennsylvania, employs 500+ specialists, and has worked with brands such as Verizon, Fujifilm, Wrangler, Cleveland Brothers, and Stanley Black & Decker across more than 200 industries.

For international projects, WebFX relies on structured processes and its own platforms, RevenueCloudFX and MarketingCloudFX, to track performance across regions and channels. This setup allows the team to manage multi-market campaigns in a consistent way and places WebFX among the top international SEO companies that work with large businesses.

• Services: Enterprise, Local SEO, PPC Management, Social Media Advertising, Digital Marketing, Website Copywriting, CRO, Web Design and Development, Reporting and Forecasting.
• Case results: 236% lift in organic sessions for a manufacturing organization, 95% increase in revenue for an e-commerce brand.

3. Ignite Visibility

Ignite Visibility is a California-based agency that runs international SEO alongside broader digital marketing programs for large and complex businesses. On global projects, the team works market by market, studying local keyword demand, adapting content to language and cultural context, and supporting global visibility across different channels with region-specific digital PR.

Ignite Visibility has 13+ years of experience and a team of 250+ specialists. The agency works with multi-location and franchise brands across healthcare, finance, home services, ecommerce, and insurance. It counts Batteries Plus, Driven Brands, Inspire Brands, and Wawanesa Insurance among its customers. This agency is a Google Premier Partner, supports campaigns in nine languages, and is known for clear, transparent reporting.

• Services: Local SEO SEM, Social Media Management, Content Marketing, Conversion Rate Optimization, Digital PR, Web Development, SEO Paid Media, Reporting, and Analytics.
• Case results: 25% increase in traffic for a franchise fitness brand, 1,848% growth in organic traffic for an electrical service provider.

4. Victorious

Victorious is also in the list of the best global SEO companies that have been operating out of San Francisco since 2013 and built its reputation working at an enterprise scale. The agency works with both startups and large enterprises, including Salesforce, SoFi, AngelList, GE Digital, and Delta Dental, and maintains a 4.8/5 rating on Clutch based on 117 reviews.

Victorious is known for enterprise-level, data-led organic growth campaigns, with all work handled fully in-house. While enterprise projects make up most of their portfolio, the team also supports international SEO by helping companies adapt content and technical setups for different markets. Over the years, the agency has received more than 180 industry awards.

• Services: Enterprise International SEO, Technical optimization, Content Strategy, Quality Link Building, Local SEO, Audits.
• Case results: 252% increase in clicks for a software company, 139% rise in conversions for an enterprise insurance brand.

5. Delante

Delante is one of the popular international SEO agencies headquartered in Kraków, Poland, with 11+ years on the market and a team of over 50 specialists. The company works with ecommerce, SaaS, travel, automotive, health and beauty, finance, and B2B brands, and its client list includes Madison Reed, Scribe America, Phrozen, Ovoko, and Douglas. Delante maintains a 4.9/5 rating on Clutch based on 150+ reviews.

What sets Delante apart is a region-first way of thinking. Each market is handled separately, with decisions based on language, local search behavior, and technical requirements. The team works across multiple languages, including English, Polish, Spanish, and Italian, relies on its own internal AI platforms like CerberAI and DAP, and builds strategies around careful analysis.

• Services: International SEO services, Technical Optimization, Link Building, Content Localisation, SEM, Paid Ads, On-page Optimization, Analytics, UX Optimization
• Case results: 300% revenue growth in six months for a UK Ecommerce company, 485% uplift in organic traffic growth in one year for a travel brand.

6. Titan Growth

Titan Growth is often included among leading international SEO companies because of its strong technical focus. Founded in 2004 and based in San Diego, the agency works with brands like Lindblad Expeditions, Sitecore, Mizuno, and Blackbaud and has a 5.0/5 rating on Clutch from 34+ reviews.

What makes Titan Growth different is its own crawler, TitanBOT®. It scans websites the same way search engines do and helps spot structure and indexing issues early. The team uses this data to guide its work and keeps customers updated through clear, regular reporting.

• Services: SEO Services, Paid Search, Keyword Research Content, and Digital PR, Link Acquisition, Social Media Marketing, Web Design, Email Marketing, SEO Strategies.
• Case results: 75% increase in organic traffic for a travel firm, 107.18% growth in revenue for a jewelry business.

7. Big Leap

Big Leap is an established digital marketing agency working with enterprise brands, SaaS platforms, ecommerce companies, and multi-location businesses. Based in Lehi, Utah, the agency has 17+ years of experience and works with customers such as Avis, Workfront, Purple, Pluralsight, Venafi, Budget, and Alphagraphics. Big Leap holds a 4.8/5 rating on Clutch from 91+ reviews.

The agency runs brand-led performance marketing, where organic traffic development is planned together with in-house content, digital PR, CRO, paid campaigns, and AI search optimization. This setup supports growth across multiple channels and long buying cycles, especially for enterprise, B2B, franchise, and multi-location businesses. Client relationships are long-term, with a retention rate above 95%.

• Services: SEO (Technical, Local, Enterprise), AI optimization, Content Marketing, Digital PR, Link Building, Paid Advertising, Conversion Optimization, RevOps, Site Migrations.
• Case results: 99.8% uplift in orders for an Ecommerce site, 181% increase in demo leads for a SaaS company.

8. Skale

Skale is an SEO firm based in London that focuses on international growth for B2B companies. The team works across English, Spanish, and German and has over six years of experience running SEO campaigns for SaaS and technology brands. Their work centers on revenue-focused SEO built around qualified leads and signups.

For international projects, Skale adapts pages to each market using competitor research, regional keyword analysis, and technical setups such as hreflang, domain structures, and performance optimization. Campaigns are tailored per region, with a clear link between SEO activity and business outcomes. Skale holds a 4.9/5 rating on Clutch based on 16+ reviews.

• Services: International SEO, SaaS Organic Growth, Content Strategy Development and Production, Link Building, Outreach, Website Migrations, Generative Engine Optimization.
• Case results: 1,370% increase in non-branded signups for SaaS company, 86% revenue growth for resume-building platform.

9. Single Grain

Single Grain is known for working with global brands such as Amazon, Uber, Airbnb, Nextiva, Crunchbase, and Fujitsu. Based in Los Angeles, the agency has 16+ years of experience and operates with a small, senior team of under 50 specialists.

Single Grain is regularly included in lists of international SEO companies thanks to its proprietary Search Engine Revenue methodology and strong track record with brands operating across multiple markets. Its work is supported by documented case studies and long-term results for companies scaling globally (4.8/5 on Clutch).

• Services: Programmatic SEO, Paid Advertising, CRO Services, Reddit Marketing, Content Marketing, Creative Strategy, TikTok Growth Services, YouTube Consulting.
• Case results: 67% increase in organic traffic for a building materials supplier, 325% lift in click-through rate for an Ecommerce brand.

10. First Page Sage

Among international SEO companies focused on long sales cycles and B2B growth, First Page Sage stands out for its thought leadership approach. The agency builds SEO around authority and trust, using structured content systems like the Hub and Spoke model, where core “hub” pages target high-value keywords and are backed up by related content “spokes.”

The company works mainly with SaaS, fintech, healthcare, manufacturing, and technology brands and has been operating from Berkeley, California, for over 13 years. First Page Sage is trusted by companies such as Salesforce, Logitech, US Bank, and Epicor, with most projects focused on enterprise-level growth and long buying cycles.

• Services: B2B SEO, Strategy Building, Generative AI Optimization, Lead Generation, Thought Leadership, SEO Consulting.
• Case results: 934% increase in keyword rankings for a software firm, 230 new leads for a B2B brand.

11. Polaris

Polaris is a London-based SEO company with a global footprint and more than 16 years of experience working on international projects for large brands. Their client list includes Mars, Dune London, Thomson Reuters, Sodexo, and Reed, and the agency holds a 5.0/5 rating on Clutch. Polaris typically works across retail, SaaS, ecommerce, travel, and healthcare.

International SEO at Polaris is built as a full 360° setup. The team covers technical foundations, onsite optimization, content and PR campaigns, and large-scale site migrations, with more than 350 migrations completed to date. For global rollouts, Polaris assembles country-specific teams from a network of 125+ experts across 17 countries.

• Services: SEO Consulting, International SEO, Technical Audits, On-site Optimization, Keyword Research, Content Marketing, Digital PR, Site Migrations.
• Case results: 240% growth in leads for a global training platform, 400% uplift in MQLs for a hospitality company.

12. Boostability

Boostability has been working with small businesses since 2009 and delivers international SEO services both directly and through a white-label model for agencies and resellers. Based in Lehi, Utah, the company holds a 4.7/5 rating on Clutch from 52+ reviews.

Boostability runs SEO campaigns through its LaunchPad platform, which tracks keywords and performance in real time. The team handles multilingual SEO, technical updates, and citation building, while live dashboards give clients and partners a clear view of progress and market expansion.

• Services: White-label SEO, Intent-driven Keyword Research, Content Writing, Authority Link Building, Local Organic Growth, Business Profile Optimization.
• Case results: +173% organic traffic for an Ecommerce site, 200% traffic growth for a real estate site.

13. Searchbloom

Among international SEO agencies focused on real business outcomes, Searchbloom has been operating since 2014 and is known for working closely with mid-market and national brands across competitive niches. The agency is based in Utah and has delivered search growth for companies such as Moxie Pest Control, Gilman Kitchens & Baths, and several ecommerce and retail brands operating at scale.

Searchbloom works across industries, including real estate, ecommerce, technology, home services, and professional services. Their case studies show consistent improvements in rankings, traffic, and conversions, with SEO decisions tied directly to how businesses acquire customers and revenue through search.

• Services: Local, National, International, and Ecommerce SEO, Paid Ads, Conversion Optimization.
• Case results: 2,500% increase in Top 3 keyword rankings for a jewelry brand, 161% revenue growth for an outdoor gear ecommerce business.

How to Find the Right International SEO Agency for Your Business

Now that we’ve reviewed our list of the best international SEO agencies in the world, here are some factors to consider when deciding on whom to partner with:

• Technical expertise: Make sure the agency can handle site architecture, hreflang tags, regional domain structures, and language tags so the correct site version appears in each market.
• Native multilingual support: Work with agencies that use native speakers for SEO content localization, aligning keywords and context with local search intent and the expectations of target audiences.
• Regulatory knowledge: Check whether the agency understands regional laws, from EU privacy rules to platform-specific regulations in Asia.
• Local link building: International search optimization only works when specific backlinks/mentions come from inside the target country, so the agency must have direct access to local publishers and media.
• Market experience: As shown in our list, agencies differ by region, so match their background to the countries you’re entering to benefit from their prior market knowledge.

In addition, here are a few questions you can ask a potential agency:

• Which languages do you work with, and do you collaborate with native speakers for true localization?
• Have you run campaigns in my target countries, and can you show examples of your work?
• How do you structure international sites (ccTLD, subdomain, or subfolder), and why?

Expand Globally with International SEO

At SeoProfy, we help clients grow across multiple countries with data-driven SEO strategies that are customized to each market. With us, you can:

• Get more traffic from multiple countries
• Improve search rankings in other languages
• Generate more leads and sales

Scale internationally

Drive Global Growth with the Right SEO Agency

If you’ve made it this far, chances are you’re seriously considering an international SEO strategy for your business. And we hope that our list of top international SEO agencies will help you choose a partner that matches your goals and budget.

At SeoProfy, we help businesses across SaaS, ecommerce, travel, finance, and other industries reach international users and grow revenue with our expert SEO services. If you’re ready to move forward, the next step is simple. Book a free call with us, and we’ll discuss your business and potential strategies to help you grow internationally.

Author

Hanna Zhytnik

As a Content writer at SeoProfy, Hanna Zhytnik creates SEO content grounded in research, data, and ongoing hypothesis testing. With more than 5 years of experience across B2B, SaaS, and ecommerce, she brings both breadth of knowledge and a sharp focus on modern search. Her strength lies in turning complex experiments into clear explanations, bridging the gap between deep SEO practice and accessible content.