sameAs Schema: Linking Your Entity to the Knowledge Graph

sameAs is a property within your structured data that connects your brand to the official profiles that exist about you elsewhere on the web. The short answer: by pointing from your Organization schema to your Wikidata item, LinkedIn page and social channels, you explicitly tell Google and AI search engines that all those sources are about one and the same entity. It sounds technical, but it is one of the most underrated levers in entity SEO. In this article you will read exactly how to implement it and why it matters.

What does sameAs actually do?

Search engines no longer think in separate pages full of keywords, but in entities: people, companies, products and places they understand as distinct things. That is one of the biggest shifts in modern SEO, and sameAs schema sits right at its hinge. The problem is that a single company name appears in dozens of places, often alongside companies with a similar name. How does Google know that your website, your LinkedIn and your listing in an industry directory all point to the same business?

That is where sameAs comes in. It is a field within the Organization schema in which you include a list of URLs to authoritative, official profiles of your brand. You are literally saying: this entity is the same as the entity behind these other URLs. For search engines, that is a reliable anchor point to bring all those signals together into one clear picture.

This is not a ranking button that multiplies your revenue. It is a recognition layer. But without that layer you leave it to an algorithm to guess whether you really are you, and that guess goes wrong regularly.

The difference with classic keyword optimisation is fundamental. With keywords you try to rank for what people type; with entities you try to make sure a system understands what you are. The two reinforce each other. A search engine that recognises your brand as an established entity gives your content the benefit of the doubt sooner and links it to the right context. sameAs is the thread that ties all those loose mentions together into one coherent story about your company.

sameAs and the Knowledge Graph

The Knowledge Graph is Google’s entity database: the source behind the knowledge panel that sometimes appears to the right of the search results. A brand with its own place in the Knowledge Graph is treated by Google as an established, known entity. That has consequences reaching far beyond a nice-looking panel.

sameAs is one of the ways you help Google make that connection. When your schema points to a Wikidata item describing your company, you give Google a structured, machine-readable confirmation of who you are. Wikidata in turn feeds countless systems that process brand information, from search engines to language models. A consistent chain of sameAs references makes your entity recognisable to all of them.

For AI search engines such as ChatGPT, Google AI Overviews and Perplexity, this is just as relevant. Those models cite brands they can identify with confidence. The more firmly your entity is anchored in trustworthy sources, the smaller the chance that a model confuses you with a namesake or mixes up your context. That is exactly why we see sameAs as a foundation under both classic SEO and GEO.

Which URLs belong in your sameAs list?

The difference between a sameAs that works and one that adds noise lies in the quality of the sources. You only include profiles you genuinely manage or that were created about you by an authoritative party. A random mention you have no control over does not belong there.

In practice, these are the sources that carry the most weight:

• Wikidata and, if present, Wikipedia. These are the strongest entity signals that exist, because search engines and language models draw directly from them.
• Your LinkedIn company page. For a B2B brand, often the most authoritative social profile.
• Your active social channels. Think of a company profile on X, Facebook, Instagram or YouTube, but only the channels you actually maintain.
• Industry registers and official profiles. A listing in a recognised trade directory or professional association can anchor your entity further.

Important: fewer but more reliable beats a long list of dead profiles. A sameAs full of neglected accounts weakens the signal instead of strengthening it.

How do you implement it technically?

sameAs lives within your Organization schema, preferably as JSON-LD. That is the format Google recommends, because it stays neatly separated from your visible HTML and is easy to maintain. You place this block in a central spot: your homepage or a fixed About page about your organisation.

The structure is straightforward. Within an object of type Organization you fill in your name, your official URL and your logo, and add a sameAs array with the full URLs to your profiles. One schema block per entity is enough; you do not need to repeat it on every page. For a brand that also wants to position people as entities, you can apply the same sameAs logic within a Person schema, for example linked to author pages.

The biggest pitfall is inconsistency. If your company name, URL or logo differs from source to source, you undermine the signal you are trying to build. So make sure the name in your schema matches exactly the name on your LinkedIn, your Wikidata item and your social profiles. Entity consistency is not a detail; it is the entire foundation sameAs leans on.

A second point of attention is the completeness of the Organization block itself. sameAs works best when it sits in a rich schema that also contains fields such as description, foundingDate, address and contactPoint. The more completely your entity is described, the easier it is for search engines to place the links in a meaningful whole. A bare Organization with only a name and a sameAs array lacks the context that makes the signal strong. So treat your homepage or About schema as the canonical description of your brand, and keep it up to date in one place instead of scattered across dozens of pages.

Validating and maintaining

Implementing without validating is asking for trouble. A typo in a URL or a syntax error in your JSON-LD makes the whole block worthless, often without you noticing. So always check your schema with Google’s Rich Results Test and the Schema Markup Validator. Both show you whether the structure is read correctly and where the errors are. Our step-by-step approach to tracking down and validating schema errors helps you with that.

Maintenance is the second part many companies forget. Profiles move, channels close and names change. A sameAs list that was correct last year may point to a dead profile today. Include it in your periodic SEO maintenance, together with your broader check on structured data.

Where sameAs fits in your growth engine

It is tempting to see sameAs as an isolated technical tweak. We look at it differently. Entity recognition is the foundation on which your visibility in both Google and AI search engines rests, and that visibility is in turn the acquisition layer of one coherent growth engine. If a model does not recognise your brand reliably, it cannot cite you, and then you miss a channel that weighs ever more heavily in the B2B buying journey.

That is why we do not treat schema as a checkbox, but as a link that feeds your pipeline, not your vanity ranking numbers. A strong entity makes sure the right people find you, trust you and eventually get in touch. If you want to set this up properly and connect it to a broader strategy, our SEO specialist helps you turn entity SEO into actual enquiries instead of loose technical tweaks.

It also pays not to see sameAs as an endpoint, but as the starting point of a broader entity strategy. Once your brand is anchored, you can build out that recognition with consistent mentions, strong author signals and structured data on your most important service pages. That way you gradually build an entity search engines and language models can no longer ignore, and that gives you a head start in both classic and generative search results.

Want to know whether your brand is already recognised correctly as an entity? Get in touch and we will look together at where the gaps in your entity signals are and how to close them.