19th Battalion may refer to:
- 19th Battalion (Australia), a World War I ANZAC battalion
- 2/19th Battalion (Australia), a World War II Australian infantry battalion
- 19th Battalion (New Zealand), a World War II infantry battalion
- 19th (Central Ontario) Battalion, CEF, a World War I battalion for the Canadian Corps
- 19th Battalion (United States Marine Corps), a battalion in the Fleet Marine Corps Reserve
- 1st/19th Battalion, Royal New South Wales Regiment 22, a unit of the Australian Army Reserve
- 19th Corps (disambiguation)
- 19th Division (disambiguation)
- 19th Brigade (disambiguation)
- 19th Regiment (disambiguation)
- 19th Group (disambiguation)
- 19th Squadron (disambiguation)
Topics referred to by the same termThis disambiguation page lists articles about military units and formations which are associated with the same title.
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