A schema.org property that links an entity to its authoritative profiles elsewhere — Wikidata, Wikipedia, official social accounts, LinkedIn. The sameAs property connects distributed references into one verified identity, strengthening disambiguation.

sameAs

Q: Why does sameAs matter?

`sameAs` is a specific property in the schema.org vocabulary used to link an entity to its authoritative profiles and records elsewhere — its Wikidata item, its Wikipedia article, its official social media accounts, its LinkedIn page, and other recognized references to the same entity. It is a small, technical element with a substantial role in entity optimization. The function `sameAs` performs is connection. References to an organization as an

An entry in The GEO Lexicon, published by 5W.

sameAs is a Schema.org property that points from an entity to a reference page that unambiguously indicates its identity, such as its Wikipedia page, Wikidata entry or official website. Using it is often called sameAs linking. It tells search and AI systems that those separate records all describe the same entity.

What does sameAs do?

References to an organization are scattered across its own site, knowledge bases, social platforms and third-party profiles. On their own they are disconnected, and a system that meets them separately does not automatically know they describe the same entity. sameAs makes the connection explicit: this entity is the same as that record. The effect is to consolidate scattered references into one coherent identity, which makes the organization easier to identify and harder to confuse with a namesake. See entity disambiguation.

It is one of the identity signals a brand controls directly, with no third party or editorial gatekeeper. It is also a practical link between a brand's owned site and the third-party profiles that search and AI systems already trust.

What does sameAs look like in practice?

sameAs sits in the structured data on the organization's entity home. A simple example in JSON-LD, with placeholder values:

{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Example Brand",
  "url": "https://example.com/",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q000000",
    "https://www.linkedin.com/company/example-brand/"
  ]
}

What should you link to?

Link type	Examples	Priority
Knowledge bases	A Wikidata item, a Wikipedia page that exists legitimately	High
Official registries and domains	A business registry entry, your own website	High
Verified profiles you control	LinkedIn company page, official social accounts	Medium
Pages that only mention you	Blog posts, news articles	Do not include

How do you implement sameAs linking?

List genuine authoritative records. Identify the profiles and databases that are clearly about your organization.
Check each one. Names, descriptions and facts should be accurate and consistent. Fix errors first.
Add them to the markup. Include the URLs in the sameAs property of your organization's structured data, on the entity home.
Link back where possible. Where a profile lets you, link it to your official site.
Keep the set stable and review it. Update it when profiles change, and check it as part of regular canonical entity maintenance.

It is a precise, controllable task with real effect on entity optimization, and it is small to implement.

What mistakes should you avoid?

Linking to pages that merely mention the brand instead of representing it.
Adding long lists of low-confidence profiles. Keep the list short and reliable.
Linking to profiles the organization does not control or that contain wrong facts.
Marking up facts that are not visible on the page.

Frequently asked questions

What is sameAs?

A Schema.org property whose value is the URL of a reference page that unambiguously indicates an item's identity, such as its Wikipedia page, Wikidata entry or official website.

What is sameAs linking?

It is the practice of using the sameAs property to connect an entity to its authoritative references across the web, so systems treat them as one entity.

Why does sameAs matter for AI search?

It gives retrieval systems explicit evidence of which external records describe the same entity, which supports accurate identification and description. No outcome is guaranteed.

Do I need a Wikipedia page to use sameAs?

No. Use the authoritative records you genuinely have, such as your own domain, a registry entry, Wikidata and verified profiles. Wikipedia is only appropriate if a legitimate article exists.

Where does the sameAs markup go?

In the structured data of your organization's entity home, usually as JSON-LD on that page.

Sources

By the 5W Editorial Team. Every 5W article is reviewed by a human editor before publication. Updated October 28, 2026.

5W is a PR, creative and GEO agency, building brand authority across the platforms where decisions now happen: ChatGPT, Claude, Perplexity, Gemini and Google AI Overviews, alongside earned media, digital and influencer channels. 5W combines public relations, digital marketing, Generative Engine Optimization (GEO) and proprietary AI visibility research to help clients measure and grow their presence in AI-driven buyer research.

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