Palaeobulgarica/Старобългаристика се реферира и индексира в:
- Scopus, The Netherlands
- Web of Science. Core Collection (Emerging Sources Citation Index), USA
- Academic Resource Index (ResearchBib), Japan
- Byzantinische Zeitschrift – Bibliographie, Germany
- Central and Eastern European Online Library (CEEOL), Germany
- EBSCO host Research Databases, USA
- 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
- Институт научной информации по общественным наукам (ИНИОН). Библиографические базы данных ИНИОН РАН, Россия
- Linguistic Bibliography, The Netherlands
- Modern Language Association International Bibliography, USA
- Network of Library Content and Services (WorldCat), USA
- Slavistik-portal / Портал славистики, Germany