The U.S.S. Glenn is a Crossfield-class starship in service in 2256, under the command of Captain Deb Underwood. Together with its sister ship, the U.S.S. Discovery, it was a test-bed for the spore drive.
- “Routine Maneuvers”: The Glenn is seen in spacedock in orbit of Earth.
- “Children of War”: The Glenn is part of a task force that combats Klingons in the Corvan System.
- “Secrets”: The Glenn is attacked and boarded by J'Ula, who is able to steal information on the vessel's mycelial drive system.
- When seen in "Children of War," the Glenn bears the name and registry of the U.S.S. Discovery.
- USS Glenn at Memory Alpha, the Star Trek Wiki.
- USS Glenn at Memory Beta, the non-canon Star Trek Wiki.