XDM

XDM or xdm or similar can refer to:

Firearms

• The Springfield Armory XDM, a variant of the HS2000 pistol sold in the United States by Springfield Armory, Inc.

In computing

• X display manager (program type), a part of the X Window System architecture
• XDM (display manager), the default display manager included with the X Window System
• XDM (file format), the Extensible Device Metadata open format for including depth maps and other metadata in standard image files
• XQuery and XPath Data Model
• Cross Document or Web Messaging, messaging that works around the limits set by the same origin policy in a web browser
• XML Document Management, an Open Mobile Alliance standard

In gaming

• XDM: X-Treme Dungeon Mastery, a role-playing game supplement by Tracy Hickman, Curtis Hickman and Howard Tayler.