100th Regiment or 100th Infantry Regiment may refer to:
- 100th Regiment of Foot (disambiguation), several units of the British Army
- 100th Anti-Tank Regiment, Royal Artillery (The Gordon Highlanders)
- 100th Heavy Anti-Aircraft Regiment, Royal Artillery
- 100th Guards Fighter Aviation Regiment
- 100th Independent Shipborne Fighter Aviation Regiment
Union Army (American Civil War):
- 100th Illinois Infantry Regiment
- 100th Indiana Infantry Regiment
- 100th New York Volunteer Infantry
- 100th Ohio Infantry
- 100th Pennsylvania Infantry Regiment
Topics referred to by the same termThis disambiguation page lists articles about military units and formations which are associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.
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