WorldCat Identities

WorldCat Identities has a summary page for every name in WorldCat (currently some 30 million names) including named persons, organizations and fictitious characters. The pages include information derived from WorldCat and other sources (VIAF, FAST) plus with unique data derived or created through a variety of special processing activities (e.g., WorldCat Identities provides statistical data about how widely held a work is). A typical WorldCat Identities page will include a list of most widely held-by-libraries works by and about the identity, a list of variant forms of name the identity has been known by, a FAST tag cloud of places, topics, etc. closely related to works by and about the person, links to co-authors, and more. Titles listed are linked to, and in many popular WorldCat Identities pages, links to the corresponding Wikipedia (English language) article are provided.

In displays, the "Find more information about:" feature provides links to WorldCat Identities pages for the named persons, organizations and fictitious characters associated with the material being described.

To allow OCLC Research to experiment with new features, we maintain a Research version in addition to the pages that are available via


WorldCat Identities arose from a "what if?" exploration led by Chief Scientist Thom Hickey with other members of what would become the WorldCat Identities team. The idea was to explore automatically assembling as much information as possible from WorldCat and other resources stewarded by OCLC about a given person, organization or fictitious character and present an algorithmically-built presentation of that information. This work was significantly aided by OCLC Research's work with FRBRizing WorldCat (i.e.. identifying and clustering variant editions of individual works) which allowed OCLC Research to do data mining to identify, say, the most widely held work authored by person and more.

OCLC Research creates the pages used by, and we plan to experiment with allowing splits and merges of Identity pages in our version of the service.


We create quarterly updates of Identity pages.


Use of our prototypes is subject to OCLC's terms and conditions. By continuing past this point, you agree to abide by these terms.

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Thomas Hickey

Team Members

Ralph LeVan

Tom Dehn

Jenny Toves

JD Shipengrover