Στη βάση Oxford Research Encyclopedias συγκεντρώνονται οι εγκυκλοπαίδειες του Oxford University Press καλύπτοντας 25 θεματικές κατηγορίες (African History, Εconomics and Finance, Literature, American History, Education, Natural Hazard Science, Asian History, Encyclopedia of Social Work, Neuroscience, Business and Management, Environmental Science, Oxford Classical Dictionary, Climate Science, International Studies, Politics, Communication, Latin American History, Psychology, Criminology and Criminal Justice, Linguistics, Religion).