Greece Business Registry (GEMI Commercial Registry) & Open Business Companies Data: GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN), Official Portals & Master Data

What You Need to Know at a Glance: Greece Business Registry & Company Master Data (GEMI Commercial Registry)

In Greece, statutory entity identity begins with General Commercial Registry (GEMI — BusinessPortal.gr) and the assignment of a formal GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN). Rather than residing in a single monolithic file, Greece’s public business registry ecosystem spans 16 official government, regulatory, and statistical sources overseen by General Commercial Registry, Government of Greece, Hellenic Statistical Authority, ELSTAT. Primary legal-entity lookup routes include GEMI overview (General Commercial Registry) and GEMI / OSS portal (General Commercial Registry).

Beyond core incorporation filings in GEMI Commercial Registry, Greece’s institutional stack incorporates open data catalogues and statistical business frames through GEMI open-data service (General Commercial Registry) and Greek open-data portal (Government of Greece); financial supervision, capital-market disclosures, and LEI records from Hellenic Competition Commission (HCC) and GLEIF LEI records for Greece (Global Legal Entity Identifier Foundation); public procurement notices, official gazettes, and intellectual-property registers such as ESIDIS / procurement (Greek procurement system) and Hellenic Industrial Property Organisation (OBI).

How the Official Greece Business Registry (GEMI Commercial Registry) & Public Data Ecosystem Work

Quick source answer: For Greece, begin with GEMI company-record and filing routes, then layer official open-data, procurement, tax, statistics and regulator sources. The practical question is which GEMI or official route proves identity, which fields can be reused, and where structured source material is available.

The strongest route is GEMI public company services and GEMI open-data/API access, enriched with ELSTAT, Diavgeia and procurement sources. That makes Greece a fragmented but increasingly API-visible registry ecosystem, but it does not remove the usual reuse checks: dataset terms, attribution, no-endorsement language, privacy, marketing-law boundaries and source freshness.

For practical work, the most useful source stack is: GEMI open-data service, GEMI overview, GEMI / OSS portal, Greek open-data portal, ELSTAT business statistics, ELSTAT SBR publication.

Official Greece Business Registry, Company Data API & Master Data Portals (16 Verified Sources)

Core Corporate Registry, Entity Lookup & Statutory Filings

GEMI overview — General Commercial Registry

Data & Access: Official explanation of GEMI

Terms & Operational Scope: Official register context. Not API documentation

GEMI / OSS portal — General Commercial Registry

Data & Access: Company search and public company data service

Terms & Operational Scope: Official source. API/bulk terms need confirmation

Diavgeia — Greek transparency programme

Data & Access: Government decisions, spending and public acts

Terms & Operational Scope: Public decision signal. Not a company register

GEMI data provision — General Commercial Registry

Data & Access: Official data-provision route for G.E.MI. data to third parties and public bodies

Terms & Operational Scope: Official data-provision context; contractual, API-key or public-body conditions may apply. Do not describe as unrestricted public bulk access; check each data-provision route

GEMI terms of use — General Commercial Registry

Data & Access: Official portal terms for GEMI browsing and electronic services

Terms & Operational Scope: Terms-controlled reuse; cite the source and avoid implying official endorsement. Terms page is a compliance source, not a data source by itself

National Open Data Portals, Bulk Feeds & Statistical Agencies

GEMI open-data service — General Commercial Registry

Data & Access: Swagger/OpenAPI-style access to public GEMI data

Terms & Operational Scope: Strong official API/open-data signal. API-key and endpoint terms must be checked live

Greek open-data portal — Government of Greece

Data & Access: National open datasets and APIs

Terms & Operational Scope: Dataset-specific reuse. Portal/API quality varies

ELSTAT business statistics — Hellenic Statistical Authority

Data & Access: Statistical Business Register and enterprise statistics

Terms & Operational Scope: Official aggregate data. Not legal company master file

ELSTAT SBR publication — ELSTAT

Data & Access: Statistical Business Register tables

Terms & Operational Scope: Official statistical source. Aggregate tables

GEMI provided services — General Commercial Registry

Data & Access: Official GEMI service map including publicity, statistics, data provision, BRIS and follow-company services

Terms & Operational Scope: Official service context; reuse depends on the specific service, terms and access model. Service overview, not a blanket permission for all GEMI data or documents

GEMI integrated systems — General Commercial Registry

Data & Access: Official description of GEMI/e-OSS systems including registry, publication, statistics and web services via KED

Terms & Operational Scope: Official systems context; data reuse still depends on endpoint and service terms. System map, not a standalone download endpoint

ELSTAT home — Hellenic Statistical Authority

Data & Access: Official statistics entry point for Greece

Terms & Operational Scope: Official statistics terms and source-reference requirements. Statistics are context and benchmarks, not legal company profiles

Central Bank, Financial Supervision, Capital Markets & LEI

Hellenic Competition Commission — HCC

Data & Access: Competition decisions

Terms & Operational Scope: Risk signal. Decision-based

GLEIF LEI records for Greece — Global Legal Entity Identifier Foundation

Data & Access: Open LEI cross-checks for Greek legal entities with LEIs

Terms & Operational Scope: GLEIF API/open-data terms; attribution and API conditions apply. LEI coverage is a regulated-market/KYB subset, not the national GEMI register

Public Procurement & Intellectual Property Registers

ESIDIS / procurement — Greek procurement system

Data & Access: Procurement procedures

Terms & Operational Scope: Procurement signal. Supplier-only coverage

Hellenic Industrial Property Organisation — OBI

Data & Access: Patents, trademarks and designs

Terms & Operational Scope: IP signal. Rights separate

Complete Comparison Matrix: Greece Business Registry (GEMI Commercial Registry), Company Master Data & Open Data APIs

Official Source	Issuing Authority	Access & Data Provided	Reuse & Licensing	Operational Scope & Boundaries
GEMI open-data service	General Commercial Registry	Swagger/OpenAPI-style access to public GEMI data	Strong official API/open-data signal	API-key and endpoint terms must be checked live
GEMI overview	General Commercial Registry	Official explanation of GEMI	Official register context	Not API documentation
GEMI / OSS portal	General Commercial Registry	Company search and public company data service	Official source	API/bulk terms need confirmation
Greek open-data portal	Government of Greece	National open datasets and APIs	Dataset-specific reuse	Portal/API quality varies
ELSTAT business statistics	Hellenic Statistical Authority	Statistical Business Register and enterprise statistics	Official aggregate data	Not legal company master file
ELSTAT SBR publication	ELSTAT	Statistical Business Register tables	Official statistical source	Aggregate tables
ESIDIS / procurement	Greek procurement system	Procurement procedures	Procurement signal	Supplier-only coverage
Diavgeia	Greek transparency programme	Government decisions, spending and public acts	Public decision signal	Not a company register
Hellenic Industrial Property Organisation	OBI	Patents, trademarks and designs	IP signal	Rights separate
Hellenic Competition Commission	HCC	Competition decisions	Risk signal	Decision-based
GEMI provided services	General Commercial Registry	Official GEMI service map including publicity, statistics, data provision, BRIS and follow-company services	Official service context; reuse depends on the specific service, terms and access model	Service overview, not a blanket permission for all GEMI data or documents
GEMI data provision	General Commercial Registry	Official data-provision route for G.E.MI. data to third parties and public bodies	Official data-provision context; contractual, API-key or public-body conditions may apply	Do not describe as unrestricted public bulk access; check each data-provision route
GEMI integrated systems	General Commercial Registry	Official description of GEMI/e-OSS systems including registry, publication, statistics and web services via KED	Official systems context; data reuse still depends on endpoint and service terms	System map, not a standalone download endpoint
GEMI terms of use	General Commercial Registry	Official portal terms for GEMI browsing and electronic services	Terms-controlled reuse; cite the source and avoid implying official endorsement	Terms page is a compliance source, not a data source by itself
ELSTAT home	Hellenic Statistical Authority	Official statistics entry point for Greece	Official statistics terms and source-reference requirements	Statistics are context and benchmarks, not legal company profiles
GLEIF LEI records for Greece	Global Legal Entity Identifier Foundation	Open LEI cross-checks for Greek legal entities with LEIs	GLEIF API/open-data terms; attribution and API conditions apply	LEI coverage is a regulated-market/KYB subset, not the national GEMI register

Operational Scope, Access Workflows & What Is Missing from Public Greece Registry Records

Greece has a central official register through GEMI and public data services, but the broader data ecosystem is fragmented. The strongest article angle is GEMI plus Diavgeia/procurement/ELSTAT/IP, with caution around API reliability and marketing-contact use.

Use GEMI and GEMI open-data/API access as the company identity layer, then add ELSTAT, Diavgeia, ESIDIS procurement, OBI and financial regulators.

Greece has one of the clearest official API stories in Southern Europe, but it is not a licence to treat every GEMI field as unrestricted bulk data. The GEMI open-data service, data-provision route and integrated-systems pages support an official API and public-data narrative, while public search, certificates, documents, KED/web-service access, statistics and regulator data can follow different rules. Treat GEMI as the company-identity backbone first, then review endpoint, API-key, document, fee, personal-data and redistribution conditions before operational reuse.

• Best starting point: GEMI public company services and GEMI open-data/API access, enriched with ELSTAT, Diavgeia and procurement sources.
• Core source stack: GEMI open-data service, GEMI overview, GEMI / OSS portal, Greek open-data portal, ELSTAT business statistics, ELSTAT SBR publication.
• Operational rule: keep GEMI identity, GEMI publications/documents, ELSTAT statistics, Diavgeia/procurement events, IP/regulator signals and contact data in separate model layers.
• GEMI access may require API keys or registration depending on the endpoint.
• Greek public-decision and procurement data are enrichment layers, not a company master file.
• API access does not create marketing-contact permission.

Frequently Asked Questions: Greece Business Registry (GEMI Commercial Registry) & Company Data

Which official authority maintains the business registry (GEMI Commercial Registry) in Greece?

Official corporate verification in Greece is conducted through General Commercial Registry (GEMI — BusinessPortal.gr), where legal entities are indexed under their statutory GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN). Depending on the entity type and filing layer, primary verification portals include GEMI overview (General Commercial Registry) and GEMI / OSS portal (General Commercial Registry). Always record the exact registration number and issuing authority shown on the official extract.

Does Greece provide an official company data API or bulk open data download?

In Greece, public-sector open data and statistical corporate datasets are published through GEMI open-data service (General Commercial Registry), Greek open-data portal (Government of Greece), and ELSTAT business statistics (Hellenic Statistical Authority), alongside core registry lookups at GEMI Commercial Registry. However, each portal applies its own schema, update cadence, and dataset-specific reuse terms (Swagger/OpenAPI-style access to public GEMI data), so programmatic ingestion requires linking records back to the statutory GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN).

How do tax authorities and financial regulators in Greece complement GEMI Commercial Registry records?

Alongside core corporate registration in GEMI Commercial Registry under the GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN), fiscal and financial-sector verification in Greece draws upon Hellenic Competition Commission (HCC) and GLEIF LEI records for Greece (Global Legal Entity Identifier Foundation). These authorities maintain taxpayer compliance records, supervised financial-institution directories, and regulatory disclosures separately from general commercial incorporation filings.

Which official portals in Greece cover public procurement, official gazettes, and intellectual property?

Beyond core registration in General Commercial Registry (GEMI — BusinessPortal.gr), researchers tracking government contractors, statutory notices, or brand ownership in Greece can consult ESIDIS / procurement (Greek procurement system) and Hellenic Industrial Property Organisation (OBI). Because these portals index participating suppliers, published legal notices, or registered rights holders, they function as enrichment layers keyed to the entity’s GEMI Number (Αριθμός Γ.Ε.ΜΗ.) & AFM (TIN).

What is the best first source for Greece company data?

The best first source is GEMI public company services and GEMI open-data/API access, enriched with ELSTAT, Diavgeia and procurement sources. It should then be combined with statistics, procurement, IP and regulator sources.

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