Logo for Basic Formal Ontology The upper level ontology upon which OBO Foundry ontologies are built.

Preferred Prefix
data retrieval obo ontology subject agnostic
Homepage Repository OBO OWL
Barry Smith   0000-0003-1384-116X   phismith
Pattern for Local Unique Identifiers

Local identifiers in Basic Formal Ontology should match this regular expression:

Example Local Unique Identifier
0000001   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Basic Formal Ontology should match this regular expression:

Example CURIE
Metaregistry Basic Formal Ontology

The metaregistry provides mappings between the Bioregistry and other registries. There are 9 mappings to external registries for this resource with 2 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
AberOWL AberOWL logo aberowl BFO
AgroPortal AgroPortal logo agroportal BFO
BioContext biocontext BFO
BioPortal BioPortal Prefixes logo bioportal BFO
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.wcpd6f
GO Gene Ontology Registry logo go BFO
OBO Foundry OBO Foundry logo obofoundry bfo
OLS Ontology Lookup Service logo ols bfo
OntoBee OntoBee logo ontobee BFO
RDF Information

When using this resource in RDF, the following URI format should be used:



A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier 0000001 is used to demonstrate the providers available for Basic Formal Ontology. A guide for curating additional providers can be found here.

Name Metaprefix URI
Basic Formal Ontology bfo http://purl.obolibrary.org/obo/BFO_0000001
Basic Formal Ontology (RDF) rdf http://purl.obolibrary.org/obo/BFO_0000001
Bioregistry bioregistry https://bioregistry.io/bfo:0000001
OBO Foundry obofoundry http://purl.obolibrary.org/obo/BFO_0000001
Ontology Lookup Service ols https://www.ebi.ac.uk/ols4/ontologies/bfo/terms?iri=http://purl.obolibrary.org/obo/BFO_0000001
BioPortal Prefixes bioportal https://bioportal.bioontology.org/ontologies/BFO/?p=classes&conceptid=http://purl.obolibrary.org/obo/BFO_0000001