Palaeobulgarica is abstracted and indexed in:
- Scopus, The Netherlands
- Web of Science. Core Collection (Emerging Sources Citation Index), USA
- Crossref. Digital Object Identifier (DOI) Registration Agency of the International DOI Foundation
- Academic Resource Index (ResearchBib), Japan
- Arts and Humanities Journals in JURN,
- Byzantinische Bibliographie Online, De Gruyter Reference,
- Central and Eastern European Online Library (CEEOL), Germany
- EBSCO host Research Databases, USA
- Electronic Journals Library, University Library of Regensburg, Germany
- ELibrary.ru. Научная электронная библиотека, Россия
- European Reference Index for the Humanities and the Social Sciences (ERIH PLUS), Norway
- Gemeinsamer Verbundkatalog (GVK), Deutschland–Österreich
- Google Scholar Bibliographic Database, USA
- Information Matrix for the Analysis of Journals (MIAR), Spain
- Institut nauchnoy informatsii po obshchestvennym naukam (INION). Bibliograficheskie bazy dannyh INION RAN, Rossia
- Linguistic Bibliography, The Netherlands
- Modern Language Association International Bibliography, USA
- Slavic Humanities Index, The Czech Republic
- Slavistik-portal / Портал славистики, Germany
- Ulrichsweb. Global Serials Directory
- WorldCat: Network of Library Content and Services, USA
- Academic Business Current Data (ABCD) index