Ordnance Corps may refer to:

• Royal Australian Army Ordnance Corps, the Corps within the Australian Army concerned with explosives and salvage of battle-damaged equipment
• Royal Canadian Ordnance Corps, an administrative corps of the Canadian Army
• Army Ordnance Corps (India), Indian Army formation providing material and logistical support to the Indian Army during war and peace
• Ordnance Corps (Ireland), combat support corps of the Irish Army
• Ordnance Corps (Israel), a combat-support corps in the IDF GOC Army Headquarters
• Pakistan Army Ordnance Corps, a material and logistic support crops of the Pakistan Army
• Royal New Zealand Army Ordnance Corps (New Zealand), a former corps of the New Zealand Army
• Sri Lanka Army Ordnance Corps, a combat support corps of the Sri Lanka Army
• Swedish Army Ordnance Corps, a former administrative corps of the Swedish Army
• Royal Army Ordnance Corps (United Kingdom), a former corps of the British Army
• United States Army Ordnance Corps, a Sustainment branch of the United States Army, headquartered at Fort Lee, Virginia