sameAs

The sameAs field is an important disambiguation signal. Schema.org defines it as the URL of a reference page that unambiguously indicates an item's identity.

Suitable targets are official profiles, for example a LinkedIn company profile, official YouTube, GitHub, X or Facebook profiles, a legitimate Wikidata entry, and relevant industry or marketplace profiles.

Not suitable are:

• private profiles or unofficial fan pages,
• outdated or inconsistently named profiles,
• purchased low-quality directory entries,
• third-party brand profiles,
• artificial or unverifiable wiki entries.

The rule is: use sameAs only for profiles that genuinely confirm the same entityAn entity is a uniquely identifiable thing or concept, such as an organisation, person, brand, product, place or technical term. Search engines and AI systems process information as entities and their relationships.Open glossary entry →. False or invented profiles weaken identity clarity rather than strengthening it.

Why it strengthens entity recognition #

Search engines and AI models build knowledge graphsA knowledge graph represents entities as nodes and their relationships as edges. It helps search engines and AI systems model things and how they connect.Open glossary entry → of entities. Consistent sameAs links let them merge the signals from all your profiles into one confident entity — which improves knowledge panels, brand disambiguation and the chance that AI assistants attribute statements to the right company instead of a similarly named one.

Best practices #

• Only link profiles you control or that officially describe the entity
• Use full canonical URLs and keep the list identical on every page
• Add authoritative third-party references (Wikidata, Crunchbase) where they exist
• Update the list when profiles move or get retired