20 SEO Agencies in Thailand
Compare delivery scope, working arrangements and measurement before choosing an agency.

Choosing an SEO agency starts with the work your website needs and the outcome your business wants. Some teams need technical implementation, others lack content capacity, and some already attract visitors but receive too few enquiries. A clear brief makes the proposals from these 20 agencies easier to compare.
Start With Your Website Needs
Prepare your website, main products or services, target customers, markets and available performance data. Ask each agency to identify its initial priorities and explain the sequence. A practical scope should show who researches keywords, produces and checks content, implements website changes and manages measurement.
Compare budgets against equivalent deliverables. Separate the retainer, development work, content and additional costs. Confirm ownership of accounts, data and completed materials, and agree how enquiries or sales from search will be reported so the discussion extends beyond keyword positions.

Brandstorm
Brandstorm describes an SEO service that brings strategy, website structure and content together. Its service page highlights business-relevant keywords, code and speed improvements, and pages that make enquiries easier. The approach may suit a business whose SEO recommendations stall because website implementation is difficult, or one that needs search activity connected more clearly to lead generation.
Bring specific problems to the discussion, such as unclear service pages, awkward forms or a slow development backlog. Ask which changes the team will implement directly, how they will be accepted and how qualified enquiries will be measured. This helps marketing, website and sales teams work towards a shared outcome.

ANGA
ANGA presents an SEO service combining keyword selection, on-page improvements, content and technical audits. It also lists dedicated e-commerce and AI-search services. This makes it an option for businesses seeking several areas of website improvement within a coordinated search plan, with priorities tied to their actual products and services.
Identify the pages that already generate business and the work your internal team cannot deliver. Ask the proposal to name each deliverable and its owner, especially technical changes requiring developers. Separate visibility, rankings and enquiries in reporting so the contribution of each workstream can be assessed.

AUN Thai
AUN Thai outlines SEO packages covering website analysis, on-page recommendations and articles, with Thai, English and Japanese keyword options. It may be relevant to businesses reaching audiences in several languages or those with an existing website team that needs a structured improvement plan.
Clarify who implements each recommendation, because advisory work and hands-on website changes can have different scopes. Separate keywords, target pages, languages and article quantities in the proposal. Check whether translation, specialist review and coordination with developers are included in the fee.

Cotactic
Cotactic lists SEO audits, on-page and technical work, local and e-commerce SEO, and conversion rate optimisation, alongside monthly reporting. It is an option to compare when a business wants to examine both how people discover a website and what they do after arriving.
Ask for prioritised changes and a clear method of measuring organic enquiries or purchases. If the business operates a website, online shop and physical branches, assign responsibility for each source of information. Check whether reporting connects search activity with commercial objectives beyond visitor counts.

IBEX
IBEX lists SEO services for B2B, e-commerce and Shopify alongside technical SEO and AI SEO. Its service information discusses on-page elements, internal links, speed and mobile responsiveness. Businesses with a defined sales model or website platform can use these specialisms as a starting point for requesting a plan tailored to their site.
For a large catalogue or quotation-led business, ask how the team will prioritise pages and distinguish platform constraints from immediately actionable fixes. Establish how measurement will connect search activity to purchases or enquiries, and examine any guarantee against its written conditions and the keywords actually covered.

KOS Design
KOS Design describes SEO work involving website analysis, keywords, internal structure, content and HTML or CSS improvements. It also provides website design and development. This combination is relevant when search work needs to be coordinated with usability changes or a broader website project.
For a redesign, request a plan for preserving pages that already attract visitors, mapping changed URLs and testing before launch. Identify the owners of content, speed and post-launch measurement. Shared acceptance criteria help designers, developers and SEO specialists manage the handover.

Minimice Group
Minimice Group presents SEO alongside AI-search optimisation, e-commerce SEO, content production and website speed work. Its positioning emphasises commercially relevant keywords and agreed KPIs. It is an option to discuss when a business wants both stronger search visibility and a clearer route from website visits to customer enquiries or sales.
Agree on what each KPI means before comparing proposals: for example, whether every form submission counts or only sales-qualified enquiries. Separate the SEO, content and development deliverables. Confirm the information your team must supply and how the agreement handles results that fall short of the stated milestones.

Move Ahead Media
Move Ahead Media lists SEO audits, on-page and technical work, e-commerce SEO and Google Business Profile support. Businesses can compare its website and local-search services against their sales channels and organisational structure, selecting the work relevant to their needs.
Multi-location businesses should prepare their branch list, service areas and existing information owners before requesting a proposal. Distinguish the objectives of service pages, product pages and branch profiles. Ask how duplicate information and similar content will be handled, and how reporting will show results for each location.

NerdOptimize
NerdOptimize lists technical SEO, content, off-page work and AI search, together with programmatic SEO built around data and page templates. It also discusses conversion optimisation and website monitoring. This may suit businesses considering content architecture, scalable page production and the user experience that precedes a conversion.
For a project involving many pages, ask how each page serves a distinct search need, who validates the information and how duplication is controlled. If enquiries are the priority, distinguish conversion work from article volume. A useful proposal should explain whether it expands content, removes user friction or does both.

One Stop Marketing
One Stop Marketing Agency describes technical audits, keyword research, on-page work and content production. It explicitly separates Thai and English keyword and content work and provides monthly reporting. It is an option for businesses serving multilingual audiences that want to review delivered work alongside results.
Define the customer group for each language, since searches and buying questions can differ for the same service. Ask the plan to identify target pages, content reviewers and enquiry measurement by language. Set delivery dates that allow the internal team enough time to review and approve changes.

Pacy Media
Pacy Media describes SEO work spanning content, code, UX/UI and link building, and identifies WordPress, Wix, Magento and custom-built websites among the platforms it works with. Its wider advertising and development services make it an option for businesses coordinating SEO with an existing platform or several marketing channels.
Explain the platform, available permissions and current maintenance arrangements. Ask the proposal to distinguish changes the agency can make from those requiring another developer. Where SEO and advertising run together, agree on conversion reporting and separate channel costs so blended results do not obscure organic-search performance.

Phoenix Media
Phoenix Media describes SEO for Thai and international markets, including local search, keyword planning, technical audits, content and measurement setup or validation. The company also describes Thai–English account support. It may suit businesses that need bilingual communication or serve customers across domestic and international markets.
Specify target languages and markets separately, together with real branches or service areas. Ask the plan to identify the pages serving each audience. If AI-search work is included, distinguish mention tracking from rankings and visits, and confirm ownership of analytics accounts and data at the end of the engagement.

Primal
Primal lists SEO audits, link building, local SEO and e-commerce SEO within a broader digital marketing offering, with an emphasis on reporting and tracking. Businesses coordinating several marketing workstreams can consider it when they want an SEO plan that explains its role within the wider customer journey.
Ask for the monthly scope and the resources assigned directly to your website. If local search and e-commerce are both included, distinguish branch pages, category pages and product pages in the plan. Reporting should make completed changes and business outcomes visible alongside keyword positions.

Relevant Audience
Relevant Audience presents SEO for companies competing in both Thai and English search. Its service list includes technical work, content, local SEO, e-commerce and AI search, with reporting framed around enquiries, calls and revenue. It is an option for organisations comparing the business performance of multilingual websites.
Ask how keyword research and content will be developed for each language rather than translated literally. Clarify tracking for calls, forms and sales. For a Shopify or multi-country site, identify platform constraints and the division of responsibility between local marketing teams, the agency and developers.

Search Studio
Search Studio lists managed SEO, on-page work, technical SEO and white-label services, together with website, competitor, keyword and AI-query research. Its website describes work for Thai and international clients. This offers a starting point both for businesses seeking ongoing support and for agencies looking for an SEO delivery partner.
For a direct business engagement, establish meeting frequency and content approval responsibilities. For white-label work, agree on client communication, content ownership, data access and report presentation before delivery begins. These arrangements can matter as much as the task list when assessing service continuity.

SiamFocus
SiamFocus offers SEO services and consulting alongside one-to-one training. Its service page discusses keywords, technical website work, on-page improvements and content. It can therefore be compared for either outsourced delivery or support in building an internal team’s SEO skills.
Separate the objective of hiring implementation support from the objective of training staff. For internal delivery, request exercises based on the actual website and clear review criteria. For ongoing services, specify verifiable changes and assess relevant visitors and enquiries rather than relying on a domain score alone.

TBS Marketing
TBS Marketing lists keyword research and strategy, content, on-page and technical SEO, local search and link building. Its website also offers consulting and SEO training. Businesses with an internal team can discuss either outsourced implementation or support that develops the capability of their existing website and marketing staff.
First distinguish whether you need execution, expert review or training, then compare deliverables appropriate to that model. Where work is shared internally, define your team’s tasks, response times for questions and a process for confirming that recommendations actually reach the live website.

THAIWEB SEO
THAIWEB SEO separates its services into audits, on-page optimisation and monthly SEO. The listed work includes structure, speed, broken links and page elements, with content and reporting in the monthly service. Businesses can compare an initial diagnostic engagement with ongoing support.
Request sample deliverables and establish whether an audit produces recommendations or includes implementation. For monthly work, specify page and content quantities and when the plan will be reviewed. Ask for transparent external-link methods and evaluate progress using visitors relevant to the business.

Upmedio
Upmedio offers SEO alongside website design, development and maintenance. Its official site describes keyword research, content implementation and on-page and off-page work. It is relevant to businesses evaluating search support together with website capability, particularly where one team must coordinate several digital tasks.
List the actual systems involved, such as WordPress, an online shop or external integrations. Ask which changes are included and which require a separate estimate. Agree on access permissions, backups and acceptance checks before release so routine maintenance and SEO work can proceed together.

Yes Web Design Studio
Yes Web Design Studio presents web design alongside SEO, with services including audits, e-commerce, international and mobile SEO, conversion optimisation and content. It may suit a business building or redesigning a website that wants search requirements and usability considered together with the design process.
For a rebuild or migration, request a plan for existing URLs, redirects and measurement checks before launch, plus responsibility for post-launch validation. Separate one-off design work from ongoing SEO, and establish whether later content changes and additional pages are included in the quoted scope.
Questions Before Hiring
How Should You Choose an SEO Team?
Start with your website’s problems and business objectives, then compare the skills needed to address them: technical work, content, page improvements and measurement. Request a plan specific to your site, examples of deliverables, named responsibilities and a reporting process you can inspect.
What Information Should You Prepare?
Prepare your website URL, main offerings, target customers, service areas, relevant competitors and internal constraints. Summarise comparable periods of traffic, enquiries and sales where available. Begin with an overview, then provide only the system access required once the scope and responsibilities are clear.
Are Rankings Enough to Measure SEO?
Rankings describe visibility, but should be considered with relevant visits, on-site behaviour and enquiries or sales. Separate branded searches from generic searches and define conversions in business terms. This prevents an attractive headline metric from hiding weak commercial relevance.
How Do SEO and Advertising Differ?
SEO improves a website and its content for organic discovery. Advertising buys placements through a platform. They can support each other, but budgets, deliverables and outcomes should remain separately identifiable. Paid clicks should not be presented as the result of organic SEO work.
When Should a New Website Start SEO?
Discuss search requirements during architecture and design, including target pages, URLs, internal links, speed and measurement. If replacing an existing site, plan how useful pages and existing URLs will be handled. Validate the implementation again after launch.
What Should AI-Search Work Include?
Ask which information, structure or content the team will improve and how brand visibility will be monitored. Results from a particular question set or tool can change. Look for dated evidence with clear test conditions, and distinguish these observations from Google rankings and website visits.
Shortlist two or three agencies and brief them using the same information. Before committing, make sure each proposal explains what will be delivered, who will do it, when it will arrive and how your business can check the result.