Wikidata is a free knowledge base driven by a community and initiated by the Wikimedia Foundation. It aims to support Wikipedia and its sibling projects (such as Wikivoyage) by providing a centralized database.
The Wikidata item representing OpenStreetMap is Q936.
Linking from OSM to Wikidata
There is also a proposal to automatically add Wikidata IDs to a number of OSM objects.
Linking from Wikidata to OSM
- A very limited way is to link from Wikidata entities to OpenStreetMap relations by using Property P402.
- A list of all currently linked OSM relations can be found here: Special:WhatLinksHere/Property:P402.
- This may be problematic, since OSM's IDs are not stable
OSM Tags and Keys
For a list of OSM tags' and keys' equivalent items in Wikidata, see Property:P1282.
For example, the Reasonator page:
has links to:
You'll see them just below the map images.
Copying data to Wikidata from OSM (or even from other Wikimedia projects) is not allowed because Wikidata uses the public-domain style Creative Commons CC0 license which does not contain any attribution or share-alike provisions. Conversely, data may be copied from Wikidata without restriction.