sameAs Array

Technical implementation · Entity & Knowledge Graph

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Definition

A sameAs array is a property in schema.org markup that lists URLs pointing to other authoritative representations of the same entity — including Wikidata entries, Wikipedia articles, social profiles, and official directory listings. It tells AI systems and search engines that multiple web addresses all refer to the same real-world entity.

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Why It Matters for AI Search

The sameAs array is the most direct mechanism for entity consolidation available through structured data. By explicitly linking a brand’s schema markup to its Wikidata QID, Wikipedia article, LinkedIn profile, and other authoritative sources, a brand gives AI systems an unambiguous entity resolution map. Every additional authoritative source added to the sameAs array strengthens the system’s confidence that it knows which entity it is dealing with — and reduces the risk of fragmentation or misattribution.

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Related Terms

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