St. Isidore University Press, formally Jsidoris Euniversitatis Scriptorium ("JES" for short), is a project of the faculty of St. Isidore University, located in far northern California, although not to be found on most maps.

The Press publishes original works by members of the St. Isidore faculty, new editions of public domain texts that deserve a wider audience, and inferences drawn by the University's clerical engine.