Top 10 SEO Agencies in Asia (Expert Rankings)

SEO Agencies in Asia presents both enormous opportunity and fierce competition for businesses seeking visibility. With over 2.9 billion internet users in Asia in 2025, more than half of the global online population, having a strong SEO partner is no longer a luxury — it’s essential for brands that want to capture attention, drive traffic and convert.

But how do you pick the right SEO agency? we’ve ranked 10 of the best SEO agencies in Asia, based on criteria such as: track record, regional presence, service breadth (technical SEO, content, link-building), transparency, and client results.

Note: “top” here does not mean perfect fit for every business — you’ll still need to match the agency with your specific goals, budget and market.

1. First Page Digital (Singapore)

Why they stand out:
Based in Singapore, with strong regional outreach in Southeast Asia.
Claims to have generated over US$3.8 billion in client sales via SEO and related digital marketing.
Deep service stack: keyword research, on-page optimization, technical SEO including server/CMS issues, international SEO (hreflang etc) for multi-market campaigns.
Clear case-studies: for one client, 50% increase in page-one keyword rankings within 6 months and strong conversion uplift.
Considerations:
Being a premium agency, you’ll likely need a strong budget (and expect performance commitments).
If your target market is outside Singapore/Southeast Asia, check their local market experience.
Ideal for: Brands looking to invest in high-quality, full-spectrum SEO across Southeast Asia, especially e-commerce or international expansion.

2. Ask Engine Ltd (Dhaka)

✅ What I found

• A profile list shows a person named Masudul Islam listed as Co-Founder at Ask Engine (AEO) in Dhaka, Bangladesh.

• The listing mentions “Ask Engine (AEO)” / “Ask Engine Optimization (AEO)” – suggesting the company may be in the digital marketing / SEO / online business optimisation space.

🔍 What you should check if you’re evaluating them

If you are considering working with or engaging Ask Engine Ltd in Bangladesh, here are some recommended checks:

• Legal registration: Verify the company in Bangladesh’s Registrar of Joint Stock Companies & Firms (RJSC) to confirm “Ask Engine Ltd” is legally registered.

• Business scope and services: Ask for a detailed service portfolio – e.g., SEO, digital marketing, engine optimization? What “engine” means in their name: search-engine, internal software-engine, marketing engine?

• Portfolio / case studies: Request previous projects they’ve done, with client references. For example: what results have they achieved (traffic growth, conversions), what industries.

• Physical address & contact: What is their office address, team size, region of service, employees. The profile shows Dhaka / Bangladesh.

• Contracts & terms: Review the scope, deliverables, pricing, turnaround, exit conditions. Also ask about how they measure success.

• Reviews / reputation: Look for independent reviews or complaints (forums, social media, local business registries).

• Financial viability: If relevant, ask for proof of financial health or business continuity (especially if the project is large or long-term).

• Compliance / ethics: Ensure their practices are up to standard – especially if the services are digital/Google SEO oriented.

3. SEOValley Solutions (India)

Why they stand out:

• A long-standing player (founded ~1999–2000) with global operations (offices in India + international presence).

• Recognised in the “Red Herring Top 100 Asia” award in 2013.
  Considerations:

• Older agencies sometimes still have legacy operational models — check how up-to-date their methods (technical SEO, E-A-T, Core Web Vitals, etc) are.
  Ideal for: Organizations looking for an experienced partner with global exposure and full-service SEO capabilities, especially if they have multilingual or multinational operations.

4. Page Traffic (India)

Why they stand out:

• Awarded “Best SEO Agency of Asia” by CMO Asia Awards (2017) for outstanding SEO performance.

• Claims strong performance metrics: “5 million+ keywords optimised”, “10,000+ SEO campaigns”.
  Considerations:

• As with any large claim, verify recent case studies and client metrics.

• Importantly, ensure their strategies align with current Google algorithm best-practices (search quality, user-experience, etc) rather than older “link-building heavy” tactics.
  Ideal for: Businesses (especially mid-sized) looking at regional SEO in India/Asia with a proven track-record and structured service.

5. PurpleClick Media (Singapore & Southeast Asia)

Why they stand out:

• Highlighted in “Top 10 Best SEO Agencies in Southeast Asia for 2025” as a notable name.

• Long-standing agency (founded 2006) and experienced across multiple digital channels (SEO, SEM, programmatic, social media) which is valuable if you need a broader digital mix.
  Considerations:

• If you only need pure SEO services (technical + content) and want a specialist, they might be broader/generalist; check depth of pure SEO offering.
  Ideal for: Brands in Southeast Asia needing SEO embedded in a wider digital marketing strategy (not just search), especially if they want integrated campaigns.

6. OOm (Singapore)

Why they stand out:

• Recognised in Singapore’s digital marketing scene; often cited in agency-lists for search marketing in the region.

• Strong in both SEO and SEM / paid search, which is beneficial if you prefer an agency that can cover both organic and paid search strategies in tandem.
  Considerations:

• If you are looking purely for SEO growth (not paid search), check their SEO-only focus.
  Ideal for: Companies in Singapore or nearby markets wanting a combined search strategy (organic + paid) from a single agency.

7. Brew Interactive (Singapore / Southeast Asia)

Why they stand out:

• Based in Singapore, with noted strength in inbound marketing, SEO, content production and digital strategy.

• Recognised as a HubSpot Platinum Solutions Partner — indicates strong demand for their inbound/SEO content-focused services.
  Considerations:

• If you need purely technical SEO and large scale link-building, ensure they have the bandwidth for that.
  Ideal for: Businesses looking for an inbound-rich SEO strategy (content + organic growth) in Southeast Asia, especially mid-sized enterprises or e-commerce.

8. Impossible Marketing (Singapore)

Why they stand out:

• A Google Partner agency, with strong focus on SEO for smaller businesses and startups in Singapore.

• Emphasis on ROI-based SEO and measurable results.
  Considerations:

• Possibly more suited for small-to-mid business level rather than large enterprise global SEO.
  Ideal for: SMEs or start-ups in Singapore / Southeast Asia who want a cost-effective and ROI-driven SEO agency rather than a large enterprise-level vendor.

9. Wcab Network Vietnam (Vietnam / Southeast Asia)

Why they stand out:

• Featured in “Top 5 SEO Agencies in Asia to Boost Your Online Visibility 2025” list for Vietnam market.

• Deep local expertise in Vietnam (Vietnamese search behaviour, local market dynamics) which can be a major advantage for that region.
  Considerations:

• If your market is outside Vietnam or outside Southeast Asia, they may be less experienced globally — verify their international reach.
  Ideal for: Businesses targeting Vietnam (or nearby emerging markets) who need strong local SEO partner, possibly with multilingual & local-language coverage.

10. RankFast (East Asia: Japan / South Korea / Taiwan / Hong Kong)

Why they stand out:

• Mentioned as one of “Top 10 Best SEO Agencies in East Asia for 2025”.

• Regional presence across Japan, South Korea, Taiwan, Hong Kong — markets which have distinct search engine ecosystems (e.g., Naver in Korea, Yahoo Japan) making specialised SEO critical.
  Considerations:

• If your business isn’t targeting East Asia (Japan/Korea/Taiwan), you may find better regional fit elsewhere.
  Ideal for: Brands looking for sophisticated SEO in language-rich, complex search markets of East Asia, or wanting a partner that understands multiregional challenges (multilingual, multichannel search engines).

How We Ranked & What to Consider When Choosing an SEO Agency

Here’s a summary of the criteria we used and what you should ask any potential SEO partner:

• Track record & proof of results: Look for case studies showing traffic growth, keyword ranking improvement, conversion uplifts, not just glossary claims.

• Depth of service: Technical SEO, on-page content, off-page (link-building/authority), local & international capabilities, multilingual where needed.

• Transparency & reporting: Real-time metrics, clear KPIs, regular updates. Beware agencies that hide metrics or only show vanity stats.

• White-hat methods / compliance: SEO that stays within search engine guidelines, focuses on user-experience, is sustainable.

• Specialisation by region/language: Asia is highly heterogeneous — what works in India may not work in Japan or Vietnam. Localised search behaviour, language, platform nuances matter.

• Budget / value fit: A “top agency” might not be the right fit if your budget or business size is small. Align service level to your stage.

• Integration with broader marketing strategy: SEO doesn’t live in isolation — you may need content, PR, social, paid search too. Some agencies specialise strictly in SEO, others are full-service.

Lastly: always treat “top 10 SEO agencies” lists with a pinch of caution. As one industry commentary puts it:

“A few months ago I checked the keyword ‘best SEO agency’. Guess what? Almost every single ‘rating’ page was fake. Not one of those websites actually analysed agencies. They just sold positions.
So use such lists as a starting point — but do your own vetting.

Conclusion

Whether you’re a startup in Southeast Asia, an enterprise looking to expand into Japan or Korea, or a business based in South Asia seeking cost-effective yet credible SEO, the agencies listed above give you strong options.