Ordnance

Ordnance may refer to:

Military and defense

 * Materiel in military logistics, including weapons, ammunition, vehicles, and maintenance tools and equipment
 * Artillery
 * Artillery shells
 * Aircraft ordnance, weapons carried by and used by an aircraft

Places

 * Ordnance, Oregon, United States
 * Ordnance Island, Bermuda

Maps-related

 * Ordnance datum (from use in ballistics), a vertical datum used as the basis for deriving altitudes on maps
 * Ordnance Survey, the national mapping agency for Great Britain