Diana Pavlac Glyer (born 21 January 1956 in Aberdeen, Maryland) is an American author, speaker and teacher whose work centers on C. S. Lewis, J. R. R. Tolkien and the Inklings.

Glyer has published widely, including contributions to dozens of books and periodicals.

[6] Glyer is also the author of Clay in the Potter's Hands (2011) and Bandersnatch: C. S. Lewis, J. R. R. Tolkien, and the Creative Collaboration of the Inklings (2016).

[7] Bandersnatch, published in 2016, applies the scholarly work of The Company They Keep to creative writing groups, encouraging them to function collaboratively just as the Inklings did.

It was a finalist for the 2008 Hugo Award for Best Related Work at Denvention 3, the 66th World Science Fiction Convention.