This article details the results of a 2011 study of cataloger librarians’ changing roles and responsibilities at academic Association of Research Libraries. The study participants, cataloging department heads, report that cataloger librarian roles are expanding to include cataloging more electronic resources and local hidden collections in addition to print materials. They are also creating non-MARC metadata. The increased usage of vendor products and services is also affecting the roles of cataloger librarians at some institutions. The article explores what skills cataloger librarians will need in the future and how libraries are providing training for that future.