Open Company Data in Turkey: Official Sources, APIs and Reuse Rights

Turkey has a serious official company-data ecosystem, but it should not be reduced to a simple list of companies. The right way to evaluate Turkey is to start with the official register, then add open-data, statistics, procurement, intellectual-property and regulator layers.

The strongest route is MERSIS official registry infrastructure, the Trade Registry Gazette, TURKSTAT, EKAP procurement, TURKPATENT and financial/competition regulators. That makes Turkey a large official registry-publication market with strong caveats, but it does not remove the usual reuse checks: dataset terms, attribution, no-endorsement language, privacy, marketing-law boundaries and source freshness.

This guide maps the main official sources for company data in Turkey, explains what each source can and cannot do, and shows where a normalized CompaniesData-style dataset adds value.

Quick Answer

Turkey has major official company-registration and publication infrastructure, but the right article does not claim a free official open bulk company database.

For practical work, the most useful source stack is: MERSIS official page, MERSIS portal, e-Government MERSIS, Trade Registry Gazette, Ministry of Trade, TURKSTAT data portal.

The safe editorial answer is this: Turkey has strong public and official business-data sources, but public data is not automatically bulk-downloadable, marketing-ready or free of personal-data constraints.

What Counts as Company Data in Turkey?

Reuse Rights and Compliance

Across Europe, the Public Sector Information and Open Data framework encourages reuse of public-sector data, and the EU high-value dataset rules include company and company-ownership data as an important category. In practice, Turkey's actual reuse position still depends on each source, endpoint, licence and access method.

• Cite official sources and preserve update dates where the source provides them.
• Do not imply that a derived dataset is endorsed by the registry or public authority.
• Do not mix public register data with marketing-contact permission.
• Check whether API, bulk download, paid extract and web-search access have different terms.
• Treat officers, beneficial owners and natural-person data as GDPR-sensitive where applicable.

Turkey has a strong official company registration infrastructure through MERSIS and the Trade Registry Gazette, but broad open bulk/API access is not the obvious story. The article should explain MERSIS, Gazette publication, procurement, statistics, IP and regulated sectors.

Main Official Sources

1. MERSIS official page

Owner: Ministry of Trade. Access: https://ticaret.gov.tr/ic-ticaret/ticaret-sicili/merkezi-sicil-kayit-sistemi-mersis.

• What it gives: Central registry system explanation
• Reuse value: Official register source
• Main limitation: Turkish source

2. MERSIS portal

Owner: Ministry of Trade. Access: https://mersis.ticaret.gov.tr/.

• What it gives: Central registry system access
• Reuse value: Official access route
• Main limitation: Authentication/account may apply

3. e-Government MERSIS

Owner: Turkiye.gov.tr. Access: https://www.turkiye.gov.tr/ticaret-bakanligi-mersis-giris.

• What it gives: Government service route
• Reuse value: Official service source
• Main limitation: Requires e-government credentials

4. Trade Registry Gazette

Owner: TOBB / Trade Registry Gazette. Access: https://www.ticaretsicil.gov.tr/.

• What it gives: Company legal notices and registry publications
• Reuse value: Official publication layer
• Main limitation: Gazette/publication model

5. Ministry of Trade

Owner: Republic of Turkiye. Access: https://ticaret.gov.tr/.

• What it gives: Trade registry and commerce authority context
• Reuse value: Official source
• Main limitation: Not a dataset

6. TURKSTAT data portal

Owner: Turkish Statistical Institute. Access: https://data.tuik.gov.tr/.

• What it gives: Enterprise/economic statistics
• Reuse value: Aggregate official data
• Main limitation: Not legal profiles

7. EKAP

Owner: Public Procurement Authority. Access: https://ekap.kik.gov.tr/EKAP/.

• What it gives: Electronic public procurement
• Reuse value: Procurement signal
• Main limitation: Supplier-only coverage

8. Turkish Patent and Trademark Office

Owner: TURKPATENT. Access: https://www.turkpatent.gov.tr/en.

• What it gives: Trademarks, patents and designs
• Reuse value: IP signal
• Main limitation: Rights separate

Practical Options

Official open-data or API route

Use MERSIS and the Trade Registry Gazette as official identity/publication anchors, then add the Ministry of Trade, TURKSTAT, EKAP, TURKPATENT, BRSA, CMB and Competition Authority.

Contact-data and marketing-list route

For sales outreach, company identity data is only the first layer. Business emails, phone numbers, contact roles, suppression logic and segmentation require a separate compliant contact-data process. That layer should be documented separately from official registry reuse.

Private reports and risk products

Private company-report providers can be useful for manual due diligence in Turkey, but the editorial focus here is not a directory of competitors. The strategic value is understanding which official sources exist and where normalization is required.

What Is Missing from Official Open Data?

• MERSIS and e-government access can involve authentication and service constraints.
• The Gazette is a legal-publication layer, not a full reusable company master dataset.
• Operational reuse should include data-protection, sanctions/export-control and marketing-contact cautions.

This is why company-data products often add value even when the underlying public sources are strong: official data is frequently split across authorities, formats, languages, identifiers and access models.

How CompaniesData Adds Value

For Turkey, CompaniesData's role is to turn fragmented source material into a usable business dataset: normalized company names, deduplicated entities, consistent country and activity fields, source provenance, update tracking and enrichment hooks.

• Normalize register identifiers and legal names.
• Match official company records with procurement, IP, LEI and regulator signals.
• Flag source provenance so every derived profile can be audited.
• Separate company identity from contact-data and marketing-permission layers.
• Package data for analysis, CRM enrichment and market research instead of forcing users to parse portals manually.

Request a CompaniesData sample for Turkey if you need a practical dataset rather than a list of source portals.

Source Matrix

Turkey is important commercially but should be framed as "authoritative registry/publication infrastructure, not proven open bulk." Mention data protection and marketing-contact separation clearly.

FAQ

Is there a single free official bulk company database for Turkey?

Not always. Turkey has official company-data sources, but bulk access, API access, paid extracts and web search can be separate products. Do not assume a complete free bulk file unless the specific source proves it.

What is the best first source for Turkey company data?

The best first source is MERSIS official registry infrastructure, the Trade Registry Gazette, TURKSTAT, EKAP procurement, TURKPATENT and financial/competition regulators. It should then be combined with statistics, procurement, IP and regulator sources.

Can public company data be reused commercially?

Often yes, but only under the conditions of the specific source. Attribution, update-date preservation, no-endorsement wording and GDPR controls may apply.

Can I use registry data for cold email marketing?

No automatic conclusion follows from public registry access. Marketing requires a separate lawful basis, suppression handling and contact-data compliance review.

Why use CompaniesData instead of manually collecting Turkey sources?

Manual collection is slow because identifiers, formats, languages and coverage differ by source. CompaniesData adds normalization, matching, deduplication, provenance and practical delivery formats.

Sources

• MERSIS official page – Ministry of Trade
• MERSIS portal – Ministry of Trade
• e-Government MERSIS – Turkiye.gov.tr
• Trade Registry Gazette – TOBB / Trade Registry Gazette
• Ministry of Trade – Republic of Turkiye
• TURKSTAT data portal – Turkish Statistical Institute
• EKAP – Public Procurement Authority
• Turkish Patent and Trademark Office – TURKPATENT
• Banking Regulation and Supervision Agency – BRSA / BDDK
• Capital Markets Board – CMB
• Competition Authority – Rekabet Kurumu