GlossaryAI search
What is the sameAs property?
Also called: sameAs, schema sameAs, sameAs markup
Definition
sameAs is a schema.org property that lists URLs of other pages which unambiguously identify the same entity, such as your official social profiles, Wikidata item or Crunchbase page, inside your structured data.
sameAs (schema.org), explained
Schema.org defines sameAs as the URL of a reference web page that unambiguously indicates the item's identity, with examples like the item's Wikipedia page, Wikidata entry or official website. In practice it's how your site says, in machine-readable form, "these profiles elsewhere are also us".
Google's Organization structured data documentation lists sameAs as a recommended property: the URL of a page on another website with additional information about your organization, such as a profile on a social media or review site. You can provide several. The same property works on Person markup for founders and authors.
Why bother? Because connecting identities is a real problem for search engines and AI systems. Your company might appear as a LinkedIn page, an X account, a GitHub org, a Crunchbase profile, a Product Hunt page and dozens of directory listings. sameAs gives them a first-party statement tying those together, which supports the corroboration they find on their own.
Keep it honest and tidy. List only official profiles you control or that are clearly about you. Use full canonical URLs. Remove profiles you've abandoned. Don't add every directory listing; a handful of strong, official profiles is better than fifty thin ones. And make sure the profiles point back to your site where possible, so the connection runs both ways.
sameAs isn't a ranking boost on its own, and it doesn't guarantee a knowledge panel. It's one piece of entity clarity: cheap to add, easy to get right, and useful every time a system needs to decide whether a mention is about you.
Why it matters for founders
Startups often share names with other companies. A clean sameAs list is a two-minute way to tell search engines and AI which profiles belong to you.
Example
A company's homepage JSON-LD includes Organization markup with sameAs pointing to its LinkedIn page, X account, GitHub organization and Wikidata item, all of which link back to the site.
Common mistakes
- Listing profiles that belong to a different company with a similar name.
- Adding dozens of low-value directory URLs instead of official profiles.
- Leaving dead or abandoned profiles in the list.
Sources
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Related terms
- Entity SEOEntity SEO is the work of helping search engines and AI systems recognize your company or product as one distinct thing, an entity, and connect the right facts, profiles and pages to it.
- Structured data (JSON-LD)Structured data is machine-readable information about a page, usually written as JSON-LD using the schema.org vocabulary. It helps search engines understand what a page is about and can make it eligible for rich results.
- Knowledge GraphThe Knowledge Graph is Google's database of real-world entities, such as people, companies, places and products, and the facts and relationships connecting them. It powers knowledge panels and helps Google understand queries.
- WikidataWikidata is a free, collaborative, multilingual knowledge base of structured facts, run by the Wikimedia movement. Each entity is an item with a Q number, described by statements that other sites and systems can reuse.