A database with bibliographic references of books, articles from journals, chapters, bibliographies, PhD dissertations and reviews which contribute to the study of Gnosticism and early Christianity. The NHBO succeeds and builds upon D.M. Scholer’s three-volume Nag Hammadi Bibliography (1948-2006). It includes bibliographic data from 2013 onwards and also fills the hiatus between 2007-2012, between Scholer’s Bibliography and the NHBO. About 13,000 entries in this cross-searchable database cover almost all publications in more than 10 languages on the Nag Hammadi Library.