diff --git a/vivo.owl b/vivo.owl
index f1d4aa1..87284f3 100644
--- a/vivo.owl
+++ b/vivo.owl
@@ -4791,6 +4791,16 @@ Definition source: https://ror.org/about/</obo:IAO_0000112>
     </owl:DatatypeProperty>
 
 
+    <!-- http://vivoweb.org/ontology/core#wikidataiD -->
+
+    <owl:DatatypeProperty rdf:about="http://vivoweb.org/ontology/core#wikidataiD">
+        <rdfs:label xml:lang="en">Wikidata ID</rdfs:label>
+        <obo:IAO_0000112 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Identifier being used by Wikidata to identify entities in Wikidata.org. Entity ID URIs follow the pattern http://www.wikidata.org/entity/ID where ID is an entity ID.</obo:IAO_0000112>
+        <rdfs:subPropertyOf rdf:resource="http://vivoweb.org/ontology/core#identifier"/>
+        <rdfs:isDefinedBy rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">https://www.wikidata.org/wiki/Wikidata:Identifiers</rdfs:isDefinedBy>
+    </owl:DatatypeProperty>
+
+
     <!-- http://vivoweb.org/ontology/core#scopusId -->
 
     <owl:DatatypeProperty rdf:about="http://vivoweb.org/ontology/core#scopusId">
@@ -4811,6 +4821,7 @@ Definition source: https://ror.org/about/</obo:IAO_0000112>
         <obo:IAO_0000112 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">definition modified from: source (http://en.wikipedia.org/wiki/Seating_capacity).</obo:IAO_0000112>
         <rdfs:domain rdf:resource="http://vivoweb.org/ontology/core#Room"/>
         <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#int"/>
+
     </owl:DatatypeProperty>