RDF Vocabularies and Ontologies in use

Dublin Core Terms (Princeton, Sufia, Curate, Oxford, Oregon Digital)
EBUCore for media (WGBH, proposed at UVa)
Lifecycle Schema (Princeton)
MADS (UC San Diego, Oxford, Amherst)
DAMS4 Data Model (UC San Diego)
FOAF (Sufia, Oxford, Oregon Digital)
RDF Schema (Sufia, Oxford, Oregon Digitali, Princeton, Amherst)
Library of Congress Genre/Form Headings (UC San Diego, Princeton)
Library of Congress Name Authority File (UC San Diego, Oregon Digital, Cincinnati, Princeton, Amherst)
Library of Congress Subject Headings (Sufia, Oregon Digital, UC San Diego, Cincinnati, Princeton, Amherst)
MARC Relator Codes (UC San Diego, Oregon Digital, Princeton, Amherst)
MARC List for Geographic Areas (Princeton)
MARC List for Countries (Princeton)
Medical Subject Headings (Cincinnati)
MODS (Amherst)
ISO 639 Language Codes (UC San Diego, Oregon Digital, Oxford, Princeton)
Lexvo (Sufia)
Geonames (Sufia, Oregon Digital)
The Prov Ontology (Oxford)
FAST Subject Headings (Oxford)
Getty AAT (Oregon Digital, Cincinnati, Amherst)
NGDC Marine Geology (UC San Diego)
RBMS Genre Terms (UC San Diego)
Thesarus for Graphic Materials (Cincinnati, Princeton)
VRACore3 (Cincinnati)