Key takeaways
- Primal ranks first: it scored 90 out of 100, with the most verified Clutch reviews of any agency I ranked and SEO as its largest service line.
- Proof is thin across the market: only five of the ten show a named client with SEO figures on their own site. The rest show logos or ad results instead.
- Nobody publishes SEO prices: not one of the ten lists a monthly SEO fee on its own site, so you'll need a written quote and scope from each.
- Treat ranking guarantees as a red flag: Google says no one can guarantee a top ranking. One agency on the list offers a page-one guarantee, and it lost points for it.
Most lists of the best SEO agencies in Thailand are written by SEO agencies in Thailand. Open a few and you'll usually find the author at number one, with no explanation of how the order was decided.
That leaves you with the questions that actually matter. Which agencies can show SEO results for named clients? Who has independent reviews, and who promises rankings they can't control? Pick on reputation alone and you can spend six months and a few hundred thousand baht before you find out.
So I did it the other way round. I checked 17 agencies against the same five pieces of public evidence on 20 October 2026. Then I scored them out of 100 and ranked the top ten. The scoring is based on the questions Google itself suggests asking an SEO.
Top 10 SEO agencies in Thailand at a glance
Here's the ranking. Each agency's score is broken down further down the page, with what to check before you sign.
| Rank | Agency | Score | Best for |
|---|---|---|---|
| 1 | Primal | 90 | Larger brands that want an established, SEO-led team |
| 2 | Minimice Group | 81 | Thai-market brands that want SEO as the main service |
| 3 | ANGA | 72 | SEO and Google Ads under one roof |
| 4 | Convert Cake | 70 | Performance-led brands running paid media too |
| 5 | Search Studio | 66 | Smaller and international businesses wanting senior hands-on help |
| 6 | GVN Marketing | 65 | Retail and hospitality brands needing web design as well |
| 7 | Move Ahead Media | 57 | Hotels and businesses in Phuket |
| 8 | IBEX | 47 | Specialist work such as Shopify or international SEO |
| 9 | Cotactic Media | 44 | Thai brands wanting SEO with creative campaigns |
| 10 | Glow Digital | 37 | Small businesses that want a small, hands-on team |
How I ranked the best SEO agencies in Thailand
Every agency was checked against the same evidence, using only what anyone can see in public: its own website and its Clutch or Sortlist profile. I didn't contact agencies or use paid data.
| Criterion | Points | What I checked |
|---|---|---|
| Verified client reviews | 25 | Number of reviews on Clutch: 20 or more scores 25, 10 to 19 scores 20, 5 to 9 scores 14, 1 to 4 scores 7 |
| Named SEO case studies | 25 | Two or more named clients with SEO figures scores 25, one scores 15, logos or unnamed results score 8 |
| SEO services listed | 20 | 5 points each for technical SEO or audits, content, link building and AI search |
| Years in business | 15 | 10 or more years scores 15, 7 to 9 scores 12, 5 to 6 scores 9, under 5 scores 6 |
| Honest promises | 15 | No ranking promise scores 15, a fee-back or pay-for-results offer scores 10, a ranking guarantee scores 0 |
The criteria follow Google's advice on hiring an SEO. It suggests asking for examples of past work and how long the agency has been in business. It also says "no one can guarantee a #1 ranking on Google". I used Clutch for reviews because they're verified and tied to a project, while a Google rating covers everything a business sells.
Seven agencies were checked but not ranked:
- Not based in Thailand: PageTraffic, which appears on Clutch's Thailand list as a sponsored listing.
- Not an SEO agency for businesses: AJ Marketing lists influencer and PR services but no SEO, and The Blueprints sells link building to other agencies.
- Couldn't be checked: I couldn't load the websites of Criclabs, Marketing Ignite and 2Bears Marketing on the review date. I'll try again at the next update.
- Conflict of interest: one agency where I used to work.
The 10 best SEO companies in Thailand, reviewed
1. Primal: 90/100
Primal is a Bangkok agency founded in 2015, with 50 to 249 staff and SEO as its biggest service line on Clutch at 40%. It has 26 Clutch reviews at 4.8, the joint highest count on this list. Its site lists SEO audits, content, link building and a separate AI search service for ChatGPT, Perplexity and Gemini.
Its one SEO case study with figures is Eatigo: 100 keywords on page one and 14,000 online reservations. Its other case studies, for brands such as Under Armour, are paid media and social.
Reviews 25 · Case studies 15 · Services 20 · Years 15 · Promises 15
Check before you sign: its Clutch hourly rate of $100 to $149 is the highest of the agencies here that list one, so ask how many hours a month your fee buys. primal.co.th
2. Minimice Group: 81/100
Minimice is an SEO-first Bangkok agency, founded in 2018, with SEO making up half its service lines on Clutch. It says it has more than 30 SEO specialists. It has the strongest case studies on this list, with four named clients and figures for each. Plus Dental Clinic's organic traffic rose 735.91% and TOA Group's 427.93%.
It has 5 Clutch reviews at 5.0. Its site offers a "no KPI, no fee" promise rather than a ranking guarantee.
Reviews 14 · Case studies 25 · Services 20 · Years 12 · Promises 10
Check before you sign: percentage gains in the thousands usually mean a very small starting point, so ask for the real visit and lead numbers. Read exactly how the KPI is defined in the contract. minimicegroup.co.th
3. ANGA: 72/100
ANGA, founded in 2019, is a Bangkok agency of about 80 people and a Google Premier Partner. Its SEO page names two clients with figures: Autobahn Thailand grew organic traffic by 1,998%, and Bangkok Golds by over 419%. It covers technical work, content, backlinks and AI search, and says it doesn't use guest posts.
The gap is reviews. ANGA has no reviews on Clutch, so it scored nothing on that criterion.
Reviews 0 · Case studies 25 · Services 20 · Years 12 · Promises 15
Check before you sign: ask to speak to a current SEO client, since there are no independent reviews to read. anga.co.th
4. Convert Cake: 70/100
Convert Cake is a performance marketing agency founded in 2018, with 26 Clutch reviews at 5.0. SEO is 20% of its service lines. Its site offers on-page and off-page SEO, plus AI SEO for visibility in AI answers.
Its named case studies, including SCB X and SCB 10X, report paid media results such as a 70% lower cost per acquisition. None show SEO figures.
Reviews 25 · Case studies 8 · Services 10 · Years 12 · Promises 15
Check before you sign: ask who on the team works on SEO day to day, and for an SEO example in your industry. convertcake.com
5. Search Studio: 66/100
Search Studio is an SEO and AI search agency in Chiang Mai, founded in 2022, with a team of eight according to its Sortlist profile. Clients work directly with senior strategists. Its case studies are named and specific: Lussopack's conversions rose 133%, and The Metro Clinic's organic traffic more than doubled.
It's young and has no Clutch reviews yet, which cost it 25 points.
Reviews 0 · Case studies 25 · Services 20 · Years 6 · Promises 15
Check before you sign: with a small team, ask who covers your account when someone is away. searchstudio.co.th
6. GVN Marketing: 65/100
GVN is a Bangkok agency with 13 Clutch reviews at 5.0. One reviewer, the Asian Institute of Hospitality & Management, credits it with "higher Google search rankings with more keywords appearing on the first page". Its site lists SEO audits and AI optimisation, and names clients such as Blue Elephant and Hyundai.
None of its case studies give SEO figures. Its founding date is also unclear: Clutch says 2017, while the business record on the same profile says 2022. I used 2017.
Reviews 20 · Case studies 8 · Services 10 · Years 12 · Promises 15
Check before you sign: SEO is 19% of its service lines on Clutch, so ask for SEO results specifically. gvnmarketing.com
7. Move Ahead Media: 57/100
Move Ahead Media has been operating since 2010, the longest of the ten. It has offices in Bangkok and Phuket and a branch in Sydney. Hotel clients feature heavily: a Centara Hotels & Resorts reviewer on Clutch says "we're very impressed with their SEO specialization".
It has 5 Clutch reviews at 4.9, and its site shows client logos and testimonials but no SEO figures. It also offers an "Outcome Marketing" service where you "pay only for the results you get".
Reviews 14 · Case studies 8 · Services 10 · Years 15 · Promises 10
Check before you sign: if you're offered the pay-for-results model, get the definition of a result in writing. moveaheadmedia.co.th
8. IBEX: 47/100
IBEX ranks near the top of Google for "SEO agency Thailand" and lists the widest set of specialisms of any agency here, including Shopify and international SEO. Its services page covers every criterion, from technical SEO to AI search.
Two things pulled it down. It has one Clutch review, and its case studies are unnamed and report ad results such as return on ad spend. Its SEO page also offers a "Page 1 Guarantee within 90 days", which is exactly what Google tells you to be wary of.
Reviews 7 · Case studies 8 · Services 20 · Years 12 · Promises 0
Check before you sign: ask which keywords the guarantee covers and what happens if they're missed. ibex.co.th
9. Cotactic Media: 44/100
Cotactic is a Bangkok agency that runs SEO alongside creative campaigns for Thai brands. Its one SEO case study, for Ditto, reports an average first-page position within three months. The same case study describes the channel as Google advertising, so it's hard to tell how much came from SEO.
Its site lists SEO content but none of the other services I scored, and it has no Clutch reviews. It describes its experience as five years in one place and nine in another. I used five.
Reviews 0 · Case studies 15 · Services 5 · Years 9 · Promises 15
Check before you sign: ask exactly which SEO tasks are in the monthly fee. cotactic.com
10. Glow Digital: 37/100
Glow Digital is a small Bangkok agency founded in 2019, with 2 to 9 staff on Clutch. Its site offers SEO with a focus on AI search tools like ChatGPT and Perplexity, plus link building.
There's little public proof yet: no Clutch reviews and no case studies with figures.
Reviews 0 · Case studies 0 · Services 10 · Years 12 · Promises 15
Check before you sign: ask for two client references you can call. glow-digital.com
Why my agency isn't on this list
Wincon is a new SEO and AEO agency, and I don't have client reviews or case studies to show yet. Scored on this method, Wincon would sit near the bottom, so putting it on the list would mean bending the rules I just set.
There's a search reason too. In early 2026, several SaaS and B2B brands saw organic visibility drop 30% to 50% within weeks, according to research reported by Search Engine Land. Most had dozens of "best" lists ranking their own product first. Google confirmed nothing, but I'd rather not publish that kind of list.
If you'd like to compare Wincon anyway, my prices are public on the pricing page, which none of the ten agencies above do. You can also read how my SEO service works.
How to choose an SEO agency in Thailand
A ranking only gets you a shortlist. Before you sign with anyone, including an agency on this list, put these questions to them:
- Can you show SEO results for a named client like us? Ask for organic visits and leads in real numbers, not only percentage growth.
- Who will do the work each month? Get names and roles, and find out how much is outsourced.
- What's included in the fee? A written scope should list the hours and exactly which content and links you'll get each month.
- How do you handle AI search? Buyers now ask ChatGPT and Google's AI for recommendations. A good agency should explain how it tracks that, for example with an AI visibility audit.
- What happens if it isn't working? Check the minimum term and the notice period.
Walk away from anyone who guarantees rankings or won't explain how they build links. If you're still weighing up whether AI search needs a separate budget, my guide to AEO vs SEO covers what changes.
FAQs about SEO agencies in Bangkok and Thailand
Which is the best SEO agency in Thailand?
On my scoring, Primal came first with 90 out of 100, followed by Minimice Group with 81 and ANGA with 72. I scored 17 agencies on verified Clutch reviews, named SEO case studies, the services they list, years in business and whether they promise rankings. The best choice still depends on your size and market, so check the agency's case studies in your industry before you sign.
How much does an SEO agency cost in Thailand?
None of the ten agencies on my list publish SEO prices on their own sites, so you'll need a quote from each. Their Clutch profiles list hourly rates from $25 to $49 up to $100 to $149. Ask for a written monthly scope that shows the hours and deliverables included. For comparison, Wincon's monthly levels start from ฿25,000 ($900) and are published on its pricing page.
Can an SEO agency guarantee page one on Google?
No. Google's own guidance says no one can guarantee a number one ranking. It also warns site owners to beware of SEOs that claim to guarantee rankings. A fee-back clause tied to a KPI isn't the same as a ranking guarantee, but read how the KPI is defined. Agree measures such as organic leads or revenue in writing before you start.
Why isn't Wincon Marketing on this list?
Wincon is a new SEO agency in Bangkok, so I have no client reviews or published case studies to show yet. Under my own method it would score near the bottom. Ranking my own agency would also be the kind of self-promotional list that Google appeared to demote in early 2026. I'd rather show the method and let the evidence decide.
How often is this list updated?
I plan to re-check every agency every six months, using the same five criteria, and change the date only when I've done that. If you run one of these agencies and a detail is wrong, email contact@winconmarketing.com with a link to the evidence. I'll review it.
Guy founded Wincon Marketing in Bangkok after nearly ten years in SEO, content and paid media, both agency-side and in-house. He moved early into AEO as AI assistants started answering buyers' questions, and now helps brands get found on Google and in AI answers.
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