The Corpus Scriptorum Ecclesiasticorum Latinorum, abbreviated CSEL, is a scholarly publication series that publishes critical text editions of the works of Latin Christian writers of late antiquity. The series is published by the CSEL research unit at the University of Salzburg.
In an extensive digitisation project, 70 previously out-of-print CSEL volumes were reissued and made accessible in 2013.
In 2023, the CSEL volumes previously available digitally were made open access, which is to be extended to all volumes published by the publisher by the beginning of 2024.