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The Index Religiosus begins from the basis of two existing bibliographies: the bibliography of the Revue d’histoire ecclésiastique and the Elenchus Bibliographicus from the journal Ephemerides Theologicae Lovanienses. These two tools are internationally recognized as essential working instruments for Theology and Religious Studies.


Aims & Scope

The Index Religiosus is an internationally renowned bibliography of academic publications in the fields of theology, religious sciences, and Church history. It is a gateway to books and articles written in major European languages (English, French, German, Italian, Spanish, Dutch, Portuguese, etc.). The bibliography stems from the fruitful collaboration between two institutions that are known for their expertise in the aforementioned domains – the Katholieke Universiteit Leuven (KU Leuven) and the Université Catholique de Louvain (UCL).


The Index Religiosus covers the full range of disciplines in Theology and Canon Law: History of Theology, History of  Religions, Old and New Testaments, Fundamental and Dogmatic Theology, Sacramentology and Liturgy, Moral and Pastoral Theology, and Canon Law.

All aspects of Church History are also widely covered: Institutions; Orders; Congregations; Influential Figures; Hagiography; Political, Social and Economic History; Archaeology; Art History; Music; Architecture; Relations with Islam and Judaism; and more, which makes the Index Religiosus a tool of the first order for all manner of disciplines.

Index Religiosus: view of a bibliographical record

Index Religiosus: view of a bibliographic record

key_features Key Features

  • Approximately 677,000 bibliographic records and 161,000 review references are searchable
  • More than 20,000 new records every year
  • Over 1000 journals systematically checked
  • Multilingual Interface (English, French, Spanish, Italian and German)
  • Indexing in English and French
  • Extensive search possibilities (Author, Title, Year of Publication, ISBN / ISSN, Geographic Area, Discipline, Period, Keyword, Person, etc.)
  • Ability to query the database from Bible Verses, the Tenets of Canon Law, or the Dead Sea Scrolls
  • Ability to export records in several formats (Endnote, Microsoft Office Word, Refworks, Zotero, etc.)
  • Ability to create email alerts with notification of new publications
  • Compatible with OpenURL
  • DOI links to articles in journals and miscellany volumes
  • Direct links to the Dictionnaire d’histoire et de géographie ecclésiastiques, Die Bischöfe des Heiligen Römischen Reiches and the Library of Latin Texts
  • Links to Google books


The list of covered journals is available here.

partner_icon Partners

The Index Religiosus is the fruit of a partnership between the Catholic University of Louvain, the KU Leuven and Brepols.

flyer Leaflet

English version (PDF)

flyer Flyer

English version (PDF)

slide3 Slides

English presentation (PowerPoint)

French presentation (PowerPoint)

video Videos

Webinar (English version)

Webinar (French version)

Exporting bibliographical records (Brepolis Bibliographies) – YouTube Video

What is OpenURL? (Brepolis Bibliographies) – YouTube Video

related Clusters & Related Databases


The Index Religiosus is part of the cluster BREPOLiS Religion, together with the Dictionnaire d’histoire et de géographie ecclésiastiques.

Related Databases

Apart from the Index Religiosus, Brepols publishes a wide range of other online bibliographies: L’Année philologique (covering Antiquity), the International Medieval Bibliography and the Bibliographie de civilisation médiévale (covering the Middle Ages), the International Bibliography of Humanism and the Renaissance (covering Early Modern History), and the Bibliography of British and Irish History.

Linked Databases

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© KU Leuven, Université Catholique de Louvain-la-Neuve & Brepols Publishers n.v.
© Online version, Functional Design and Publication Rights by Brepols Publishers n.v. (Turnhout, Belgium)

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